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Научни приноси на гл. ас. д-р Пламен Георгиев
Дисертация д-р
Пламен Георгиев Георгиев, Роль контактных межклеточных взаимодействий в дифференцировке эмбриональных тканей шпорцевой лягушки. Автореферат., МГУ "М. Ломоносов", Ръководител:проф. Л. Белоусов 1987
Статия в научно списание
1 Georgiev P., Nikolova M., Spasova I., Iliev M., Ilieva R., Biological leaching of copper, zinc, and cobalt from pyrometallurgical copper slags using Aspergillus niger and Penicillium ochrochloron, Journal of Ecological Engineering, vol:26, issue:12, 2025, pages:197-213, ISSN (online):22998993, doi:10.12911/22998993/208320, Ref, IR , SCOPUS, SJR (0.408 - 2025), SCOPUS Quartile: Q2 (2025), др.((ESCI) – Web of Science Core Collection) 2025
2 Georgiev P., Nikolova M., Spasova I., Iliev M., Ilieva R., Non-Ferrous Metal Bioleaching from Pyrometallurgical Copper Slag Using Spent Medium of Different Fungal Species, Metals, vol:15, issue:12, 2025, doi:https://doi.org/10.3390/met15121359, Ref, SCOPUS, SJR (0.586 - 2024), SCOPUS Quartile: Q1 (2025) 2025
3 P. Georgiev, S.Simeonova, L. Mihaylov, D. Nihtianova, K. Balashev, Study of the Kinetics of Nucleation and Growth of Silver Nanoparticles: UV-Visible Spectroscopy vs. Atomic Force Microscopy and Transmission Electron Microscopy, Comptes Rendus de L'Academie Bulgare des Sciences, , vol:77, issue:9 , 2024, pages:1277-1284, doi:10.7546/CRABS.2024.09.02, Ref, IF (0.3 - 2022), Web of Science Quartile: Q3 (2024), SCOPUS, SJR (0.16 - 2023), SCOPUS Quartile: Q3 (2024) 2024
4 Georgiev P., Simeonova S., Mihaylov L., Nihtianova D., Balashev K., STUDY OF THE KINETICS OF NUCLEATION AND GROWTH OF SILVER NANOPARTICLES: UV-VISIBLE SPECTROSCOPY VS. ATOMIC FORCE MICROSCOPY AND TRANSMISSION ELECTRON MICROSCOPY, Comptes Rendus de L'Academie Bulgare des Sciences, 2024, doi:10.7546/CRABS.2024.09.02, Ref, IF (0.3 - 2024), Web of Science Quartile: Q3 (2024), SCOPUS, SJR (0.154 - ), SCOPUS Quartile: Q3 (2024) 2024
5 D. Pressyanov, M. Momchilov, P. Georgiev, Influence of humidity on activated carbon fabrics scheduled for use in high sensitivity radon detectors, Applied Radiaton and Isotopes, vol:200, 2023, Ref, IF, IF (1.6 - 2023), Web of Science Quartile: Q3 (2022), MSc 2023
6 V. Groudeva, I. Spasova, M. Nikolova, P. Georgiev, M. Iliev, R. Ilieva, S. Groudev, Treatment of heavy polluted acid drainage by means of a passive system, Comptes rendus de l’Acad´emie bulgare des Sciences, vol:74, issue:10, 2021, Ref, Web of Science, Web of Science Quartile: Q2 (2021) 2021
7 Groudeva V., Spasova I., Groudev S., Nicolova M., Georgiev P., Iliev M, Ilieva R., Treatment of heavy polluted acid drainage waters by means of a passive system, Comptes Rendus de L'Academie Bulgare des Sciences, vol:10, issue:74, 2021, pages:1496-1501, ISSN (print):13101331, doi:10.7546/CRABS.2021.10.09, Ref, Web of Science, IF (0.326 - 2021), Web of Science Quartile: Q4 (2021), SCOPUS, SJR (0.194 - 2021), SCOPUS Quartile: Q3 (2021) 2021
8 Georgiev P., Chanachev A., Simeonova S., Mihaylov L., Nihtianova D., Ivanova T., Balashev K., A new method for studying the kinetics of synthesis of gold nanoparticles in hexadecylanilin monolayer at the air/water interface by means of atomic force microscopy, Comptes Rendus de L'Academie Bulgare des Sciences, 2020, pages:197-202, ISSN (online):13101331, doi:10.7546/CRABS.2020.02.07, Ref, Web of Science, Web of Science Quartile: Q2 (2020), SCOPUS Quartile: Q2 (2020) 2020
9 P. Georgiev, S. Simeonova, R. Tsekov, K. Balashev, Dependence of Plasmon Spectra of Small Gold Nanoparticles from Their Size: an Atomic Force Microscopy Experimental Approach, Plasmonics, vol:Volume 15, issue:Issue 2, 2020, pages:371-377, ISSN (print):1557-1955, ISSN (online):15571963, ISBN:1557-1963, doi:DOI: 10.1007/s11468-019-01034-4, Ref, Web of Science, IF (4.3 - 2024), Web of Science Quartile: Q3 (), SCOPUS, SJR (0.468 - 2024), SCOPUS Quartile: Q3 (SCOPUS-SJR for 2024: 0.468) 2020
10 Groudev S., Spasova I., Groudeva V., Nicolova M., Georgiev P., Iliev M., Ilieva R., Passive treatment of metal-polluted waters in combination with electricity generation by microbial fuel cells, Comptes rendus de l’Acad´emie bulgare des Sciences, vol:73, issue:1, 2020, pages:73-81, ISSN (print):1310–1331, ISSN (online):2367–5535, doi:10.7546/CRABS.2020.01.09, Ref, Web of Science, IF (0.378 - 2020), Web of Science Quartile: Q3 (2020), SCOPUS, SJR (0.244 - 2020), SCOPUS Quartile: Q2 (2020) 2020
11 A. Chanachev., S. Simeonova, P. Georgiev, Tz. N. Ivanova, S. Petrova, K. Balashev, Characterization by atomic force microscopy of gold nanoparticles functionalized with azocasein for protease colorimetric enzyme assay , Bulgarian Chemical Communications, issue:50, 2018, pages:223-227, Ref, IR , SCOPUS, SJR (0.15 - 2023), SCOPUS Quartile: Q4 (2018), PhD 2018
12 Simeonova S., Georgiev P., Exner K.S., Mihaylov L., Nihtianova D., Koynov K., Balashev K., Kinetic study of gold nanoparticles synthesized in the presence of chitosan and citric acid, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2018, pages:106-115, ISSN (online):09277757, doi:10.1016/j.colsurfa.2018.02.045, Ref, Web of Science, Web of Science Quartile: Q2 (2018), SCOPUS Quartile: Q2 (2018), International, PhD 2018
13 Georgiev P., Spasova I., Groudeva V., Nicolova M., Lazarova A., Iliev M., Ilieva R., Groudev S., Bioleaching of valuable components from a Pyrometallurgical final slag, Solid State Phenomena, vol:262, 2017, pages:696-699, ISSN (online):10120394, doi:10.4028/wwwscientific.net/SSP.262.696, Ref, IR , SCOPUS, SJR (0.156 - 2017), SCOPUS Quartile: Q4 (2017) 2017
14 R. Tsekov, P. Georgiev, S. Simeonova, K. Balashev, Quantifying the blue shift in the light adsorption of small gold nanoparticles, C. R. Acad. Bulg. Sci., vol:70, 2017, pages:1237-1246, Ref, Web of Science 2017
15 Georgiev P., Simeonova S., Chanachev A., Mihaylov L., Nihtianova D., Balashev K., Acceleration effect of copper(II) ions on the rate of citrate synthesis of gold nanoparticles, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2016, pages:39-48, ISSN (online):09277757, doi:10.1016/j.colsurfa.2015.12.031, Ref, Web of Science, Web of Science Quartile: Q2 (2016), SCOPUS Quartile: Q2 (2016), PhD 2016
16 P. Georgiev, N. Kaneva, A. Bojinova, K. Papazova, K. Mircheva, K. Balashev, Effect of gold nanoparticles on the photocatalytic efficiency of ZnO films, Colloids and Surfaces A, том:460, 2014, стр.:240-247, doi:http://dx.doi.org/10.1016/j.colsurfa.2014.02.004, Ref, Web of Science, SCOPUS Quartile: Q2 (2014) 2014
17 N. Kaneva, P. Georgiev, K. Balashev, A. Bojinova, K. Papazova, D. Dimitrov, Enhanced Photocatalytic Degradation of Malachite Green by Nanocrystalline ZnO/Au Thin Films, NANOSCIENCE & NANOTECHNOLOGY, 2014, pages:59-62 2014
18 P. Georgiev, A. Bojinova, B. Kostova, D. Momekova, T. Bjornholm, K. Balashev, Implementing the atomic force microscopy for studying the kinetics of gold nanoparticle‘s growth, Colloids and Surfaces A: Physicochemical and Engineering Aspects, том:434, брой:3, 2013, стр.:154-163, Ref, Web of Science, в сътрудничество с чуждестранни учени 2013
19 S.I. Karakashev, P. Georgiev, K. Balashev, On the growth of pneumatic foams, The European Physical Journal E, том:36, брой:2, 2013, стр.:13-0, Ref, Web of Science 2013
20 S.I. Karakashev, P. Georgiev, K. Balashev, Foam production - Ratio between foaminess and rate of foam decay , Journal of Colloid and Interface Science, том:379, брой:1, 2012, стр.:144-147, doi:https://doi.org/10.1016/j.jcis.2012.04.048, Ref, Web of Science 2012
21 S. I. Karakashev, P. Georgiev, K. Balashev, Foam production – Ratio between foaminess and rate of foam decay, Journal of Colloid and Interface Science , том:379, брой:1, 2012, стр.:144-147, Ref, Web of Science 2012
22 T. Spassov, V. Rangelova, S. Todorova, P. Georgiev, Hydrogen Storage in Metal-Organic Microporous Structures, Current Physical Chemistry , том:2, брой:2, 2012, стр.:162-177, Ref, Web of Science 2012
23 A. Bojinova, C. Dushkin, M. Kostadinov, N. Kaneva, G. Ivanova, P. Georgiev, Sol gel obtained nanocomposite TiO2/WO3 thin films for photocatalytic applications, Nanoscience and Nanotechnology, vol:12, issue:E. Balabanova, I. Dragieva , 2012, pages:102-105 2012
24 Georgiev P., V. Necheva, V. Penkov, A role of morphogenetic movements in differentiation of suprablasroporal zone in Triturus vulgaris (Amphibia: Caudata) early gastrula., Acta Zool. Bulg., том:60, брой:2, 2008, стр.:165-170, Ref 2008
25 Georgiev P., V. Necheva, P. Orozova, Influence of morphogenetic movements on the differentiation of lateral and ventral explants from the marginal zone of Triturus early stage gastrula. , Annual of Sofia University "St. Kliment Ohridski", 2008 2008
26 Георгиев П., В. Нечева, Влияние на SITS и среди с намалено съдържание на хлорни йони върху спонтанното съзряване на овоцити от Triturus. Годишник на департамента по езиково обучение – ИЧС при СУ “Св. Климент Охридски”, 15: 170-175, 2007, Годишник на ДЕО-ИЧС при СУ"Св.КлиментОхридски", том:15, 2007, стр.:170-174, doi:ISSN 1312-2223 2007
27 Георгиев П., В. Нечева, Влияние на среди с натриев метансулфонат върху стероидогенезата и зреенето на овоцити от Triturus, индуцирани със суспензия от хомологични хипофизи. Годишник на департамента по езиково обучение – ИЧС при СУ “Св. Климент Охридски”, 15: 157-163, 2007, Годишник на ДЕО-ИЧС при СУ"Св.КлиментОхридски", том:15, 2007, стр.:157-163, Ref 2007
28 Нечева В., Георгиев П., Ядрата на фоликулярните клетки не контролират зреенето на овоцити от амфибии, индуцирани с гонадотропни хормони in vitro. Годишник на департамента по езиково обучение – ИЧС при СУ “Св. Климент Охридски”, 15: 163-170, 2007, Годишник на ДЕО-ИЧС при СУ"Св.КлиментОхридски", том:15, 2007, стр.:163-170, doi:ISSN 1312-2223 2007
29 Georgiev P., V. Necheva, V. Penkov, Role of the morphogenetic cell movements in differentiation of the marginal zone lateral fragments in TRITURUS VULGARIS L.(Amphibia:Caudata) early stage gastrula., Acta Zool. Bulg., том:58, брой:2, 2006, стр.:245-252, Ref 2006
30 Georgiev P., V. Necheva, E. Tambueva, Influence of DITS on progesterone synthesis and follicle maturation in Tritutus. Annual of Sofia University “St. Kliment Ohridski”, 95: №1, 19-23, 2005, Annual of Sofia University "St. Kliment Ohridski", том:95, брой:1, 2005, стр.:19-23, Ref 2005
31 Georgiev P., V. Necheva, E. Tambueva, Influence of chloride ions on the progesterone synthesis and oocyte maturation stimulated with homologous pituitary suspension in Triturus. , Annual of Sofia University "St. Kliment Ohridski", том:95, брой:1, 2005, стр.:25-30, Ref 2005
32 T. Abdul-Redah, P. Georgiev, D.K. Ross, M. Krzystyniak, C.A. Chatzidimitriou-Dreismann, Short lived protonic quantum entanglement and coupling to the electronic environment in LaH 2 and LaH 3, Journal of Alloys and Compounds, том:404-406, 2005, стр.:787-789, doi:10.1016/j.jallcom.2005.05.004, Ref, IF, IF (3 - ), в сътрудничество с чуждестранни учени 2005
33 Georgiev P., V. Necheva, E. Tambueva, The role of chloride channels in Triturus steroidogenesis and oocyte maturation., Annual of Sofia University "St. Kliment Ohridski", том:95, брой:1, 2005, стр.:31-35, Ref 2005
34 P. Georgiev, M. Kostadinov, A. Bojinova, C. Papazova, C. Dushkin, I. Poulios, S. Sotiropoulos, Synthesis, doping and characterization of TiO2 for photocatalysis, Ann. De L’Univ. De Sofia, Fac. De Chimie, том:96, 2004, стр.:243-254, в сътрудничество с чуждестранни учени 2004
35 Georgiev P., V. Necheva, Self-organization of axial structures in the early embryonic development of Rana temporaria. Annual of Sofia University “St. Kliment Ohridski”, 95: №4, 297-300, 2003., Annual of Sofia University "St. Kliment Ohridski", том:95, брой:4, 2003, стр.:297-300, Ref 2003
36 Georgiev P., Differentiation of animal-vegetal recombinants from Xenopus laevis at early blastula stage., Annual of Sofia University “St. Kliment Ohridski”, 87-89: №3, 27-29, 1997. , Annual of Sofia University "St. Kliment Ohridski", том:87-89, брой:3, 1997, стр.:27-29, Ref 1997
37 Georgiev P., Study of neuralizing influence of concanavalin A and wheat germ agglutinin on ectodermal explants from Xenopus laevis., Annual of Sofia University "St. Kliment Ohridski", том:87-89, 1997, стр.:30-32, Ref 1997
38 Georgiev P., Formation of vessel-like structures in mesodermal explants from embryos of Rana ridibunda. Compt.Rend.Acad.Bulg.Sci., 49: №5, 113-115, 1996, Compt.Rend.Acad.Bulg.Sci., том:49, брой:5, 1996, стр.:113-115, Ref 1996
39 Georgiev P., Neuralizing inductive effect of phytohemagglutinin, kainic acid and ouabain on the ectodermal explants from early gastrula of Rana ridibunda. Compt.Rend.Acad.Bulg.Sci., 49: №6, 93-94, 1996, Compt.Rend.Acad.Bulg.Sci., том:49, брой:6, 1996, стр.:93-95, Ref 1996
40 Georgiev P., Neuralization of ectodermal explants from Rana ridibunda under the influence of concanavalin A., , Compt.Rend.Acad.Bulg.Sci.,, том:48, брой:11-12, 1995, стр.:127-129, Ref 1995
41 Georgiev P., The effect of forskolin and cyclic adenosine monophosphate on the neuralizing activity of concanavalin A in ectodermal explants from Rana ridibunda., Compt.Rend.Acad.Bulg.Sci., 48: №9-10, 139-141, 1995, Compt.Rend.Acad.Bulg.Sci., том:48, брой:9-10, 1995, стр.:139-141, Ref 1995
42 Georgiev P., Differentiation of animal-vegetal combinations from early blastula of Rana ridibunda., Compt.Rend.Acad.Bulg.Sci., том:47, брой:10, 1994, стр.:105-107, Ref 1994
43 Georgiev P., Differentiation of animal-vegetal combinations from early blastula of Rana ridibunda., Compt.Rend.Acad.Bulg.Sci., том:47, брой:10, 1994, стр.:105-107, Ref 1994
44 Georgiev P., Differentiation of animal-vegetal combinations from early blastula of Rana ridibunda., Compt.Rend.Acad.Bulg.Sci., том:47, брой:10, 1994, стр.:105-107, Ref 1994
45 Georgiev P., L. Belousov, Dinomics of the extrscellular matrix in embryonal tissues from amphibian after short-time disturbance of the normal intercellular junctions., Comp.Rend.Acad.Bulg.Sci., том:44, брой:12, 1991, стр.:113-116, Ref 1991
46 Georgiev P., Beloousov L., Differentiation of explants from Xenopus laevis presumptive neuroderm in a normal state and after short-term effect on cell contacts. , Compt.Rend.Acad.Bulg.Sci.,, том:43, брой:9, 1990, стр.:125-128, Ref 1990
47 Георгиев П., Л. Белоусов, Перестройки морфологической структуры и деградация внеклеточного матрикса в эмбриональных тканях амфибий после кратковременного нарушения клеточных контактов, Онтогенез, том:18, брой:5, 1987, стр.:535-540, Ref 1987
48 Георгиев П., Л. Белоусов, Влияние кратковременного нарушения клеточных контактов на дифференцировку мезодермы зародышей шпорцевой лягушки. , Онтогенез, том:17, брой:3, 1986, стр.:556-562, Ref 1986
Статия в сборник (на конференция и др.)
1 Georgiev P., Nicolova M., Spasova I., Iliev M., Ilieva R., Non-ferrous metals bioleaching from pyrometallurgy copper slag using spent medium of different fungal species., XVI International Mineral Processing and Recycling Conference, 2025, ISBN:978‑86‑6305‑158‑4, doi:https://doi.org/10.5937/IMPRC25220G, Ref 2025
2 Georgiev P., Nicolova M., Spasova I., Iliev M., Ilieva R., Groudeva V., Groudev S., Bioleaching of magnesium and non-ferrous metals from nickel-silicate ore. , XIX–Mineral Processing Congress, 2023, pages:45-51, ISBN:978-9951-9138-0-5 2023
3 K. Bardarov, I. Buchvarov, T. Yordanova, P. Georgiev, Laser-induced break down spectroscopy for quantitative analysis of electrolytes (Na, K, Ca, Mg) in human blood serum, Proceedings of SPIE, editor/s:Alexander A. Dreischuh, Tony Spassov, Isabelle Staude, Dragomir N. Neshev, 2019, doi:10.1117/12.2552209, Ref, Web of Science, IF (0.86 - 2018), SCOPUS, SJR (0.24 - 2018) 2019
4 Ilieva R., Groudev S., Groudeva V., Spasova I., Nicolova M., Georgiev P., Iliev M., Cleaning of drainage waters from mining wastes followed by electricity generation. , 3rd International conference on applied Biotechnology, 2018, pages:158-161 2018
5 Ilieva R., Groudev S., Groudeva V., Spasova I., Nicolova M., Georgiev P., Iliev M., Electricity generation by means of a microbial fuel cell from waters treated by constructed wetland., 3rd International conference on applied BiotechnologyProceeding book, 2018, pages:154-157 2018
6 Ilieva R., Iliev M., Angelova B., Groudeva V., Spasova I., Groudev S., Georgiev P., Isolation of the iron reducing bacteria and application in microbial fuel cell for electricity generation, 3rd International conference on applied Biotechnology, 2018, pages:130-135 2018
7 N. Kaneva, P. Georgiev, K. Balashev, A. Bojinova, K. Papazova, D. Dimitrov, Enhanced photocatalytic degradation of malachite green by nanocrystalline ZnO/Au thin films, Nanoscience and Nanotechnology 14, редактор/и:E. Balabanova, E. Mileva, издателство:Sofia, 2014, стр.:59-63 2014
8 P. Georgiev, A. Bojinova, K. Balashev, New approach for studying kinetics of gold nanoparticles growth with AFM, Nanoscience and Nanotechnology, 13 eds , Sofia, редактор/и:E. Balabanova, E. Mileva, 2013, стр.:87-90 2013
9 P. Georgiev, S. Angelova, A. Bojinova, C. Dushkin, K. Balashev, Acceleration of gold nanoparticle growth by europium (III) ions, Nanoscience and Nanotechnology 12ed., редактор/и:E. Balabanova, E. Mileva, 2012, стр.:56-58 2012
10 S. Angelova, P. Georgiev, G. Gicheva, C. Dushkin, T. Dikova, Comparison of the optical properties of nanoparticles, synthesized by different chemical methods, Nanoscience and nanotechnology , редактор/и:E. Balabanova, I. Dragieva, издателство:Heron Press Sci. Series, 2011 2011
11 P. Georgiev, K. Rajabloo, P. Vasileva, C. Dushkin, Foams with metal nanoparticles, Nanoscience and nanotechnology 11 , editor/s:E. Balabanova, I. Dragieva, Publisher:Heron Press Sci. Series, 2011, pages:115-119, ISSN (print):1313-8995, Ref, др.(Chemical abstract), International, MSc 2011
12 C. Dushkin, P. Georgiev, K. Rajabloo, P. Vasileva, N. Vaklev, Metal nanoparticles, Nanoscience and nanotechnology, editor/s:E. Balabanova, I. Dragieva , Publisher:Heron Press Sci. Series, 2011, ISSN (print):1313-8995, Ref, др.(Chemical abstract), International, MSc 2011
13 P. Georgiev, I. Angelov, C. Papazova, A. Bojinova, Aggregation of sol-gel obtained TiO2 nanopowders, Natural Sciences , редактор/и:D. Enchev, A. Avramov, D. Kamenov, D. Kiurkchieva, V. Konsulov, L. Antonova, издателство:Shoumen Univ Publ., 2003, стр.:74-76 2003
14 M. Kostadinov, P. Georgiev, A. Bojinova, C. Dushkin, Preliminary tests for the photocatalytic activity of TiO2 nanoparticles in slurry, Nanoscience and Nanotechnology 2003, издателство:Heron Press, 2003 2003
Студия в научно списание
1 Al. Chanachev, S. Simeonova, P. Georgiev, Tz. Ivanova, S. Petrova, K. Balashev, Characterization by atomic force microscopy of gold nanoparticles functionalized with azocasein for protease colorimetric enzyme assay, Bulgarian Chemical Communications, vol:Volume 50, issue:Issue 2, 2018, pages:223-227, ISSN (online):0324-1130, ISBN:08619808, Ref, Web of Science, IF (0.349 - 2024), Web of Science Quartile: Q4 (2018), SCOPUS, SJR (0.148 - 2024), SCOPUS Quartile: Q4 (SCOPUS-SJR for 2024: 0.148), PhD 2018
2 A. Chanachev, S. Simeonova, P. Georgiev, K. Balashev, Tz. Ivanova, I. Panaiotov, Monolayer kinetic model of formation of gold nanoparticles by reducing agents hexadecylaniline or bovine serum albumin, Colloids and Surfaces A: Physicochemical and Engineering Aspects, vol:Volume 508, 2016, pages:1-7, ISSN (print):18734359, ISSN (online):0927-7757, ISBN:09277757, doi:DOI: 10.1016/j.colsurfa.2016.08.005, Ref, Web of Science, IF (5.4 - 2024), Web of Science Quartile: Q1 (2016), SCOPUS, SJR (0.944 - 2024), SCOPUS Quartile: Q1 (SCOPUS-SJR for 2024: 0.944), PhD 2016
3 A. Chanachev, P. Georgiev, Tz. Ivanova, K. Balashev, Study of protein modified gold nanoparticles in bulk phase and at air/water interface , Chemistry, том:24, брой:6, 2015, стр.:863-876, Ref, PhD 2015
Учебник
Виктория Нечева, Пламен Георгиев, Елена Тамбуева, Обща хистология - ръководство за упражнения, Гера Арт, София, Ref 2004
Учебно помагало
Марин Симеоновски, Михаела Кожухарова, Тренка Аргирова, Светла Евтимова, Мариела Оджакова, Даниела Симеоновска, Ценка Часовникарова, Пламен Георгиев , Теми и тестови задачи по биология и здравно образование за конкурсен изпит във висшите училища. , ISBN:954-8976-31-5, Стандарт , София, Рецензирано 2004