Abstracting & Covarage

- Scopus (SJR2017 = 0.123; SJR2018 = 0.103)
SCImago Journal Rank (SJR, 2016-2018 - Q4) 
- Web Of Science - Clarivate Analytics Master Journal List (Zoological Record, BIOSIS Previews, Biological Abstracts)
Index Copernicus (ICv2015=84.21; ICv2016=96.15; ICv2018=109.62)
Directory of Open Access Journals (DOAJ)
ResearchBib (Academic Resource Index)  
International Accreditation and Research Council (JCRR)
(IARC Impact Factor 2015: 1.061; 2016: 1.581; 2017: 1.960) 
InfoBase Index (SINo 115, IBI Factor 2014-2015: 3,46)
CAB International – CABI Asbtracts
All-Russian Institute of Scientific and Technical Information (VINITI) (Referativnyi zhurnal)
Elsevier (GEOBASE) 
Genamics Journal Seek
Ulrich's Web (ProQuest)
Scientific Index Services (SIS) 
Journal's Impact Factor (JIF) (from 2014)
Academic Keys
BASE (Bielefeld Academic Search Engine)
E-resources (Columbia University Libraries)
Ovid Link Solver
Summon Serial Solutions
Ape Journal – Academic Publications eJournal
EZB – Elektronische Zeitschriftenbibliothek – Universitätsbibliothek Regensburg
ROAD - Directory of Open Access Scholary Resources 
DTU Findit 
Zeitschriftendatenbank (ZDB) 
CNKI Scholar (China National Knowledge Infrastucture) 
Eurasian Scientific Journal Index (ESJI)
International Impact Factor Services (IIFS)
- International Society for Research Activity (ISRA)
Scholar Article Impact Factor (SAIF)
AE Global Index
- Academic Journals Database
- ImpactFactor.pl
Google Scholar Search Engine

Last updated: 02.01.2020.

Electronic libraries:

Vrije Universiteit Brussel Digital Library (V-link) [Belgium]
Geneva Foundation for Medical Education and Research [Switzerland]
Stanford University Library (SU LAIR) [USA]
The Smithsonian Institution Libraries [USA]
The University of Queensland Library [Australia]
University of Tsukuba Library [Japan]
San Jose State University Library [USA]
Carnegie Mellon University Libraries [USA]
Swansea University Prifysgol Abertawe [UK]
Eastern Michigan University Library [USA]
New York University Libraries [USA]
UTC Lupton Library [USA]
Harowd B. Lee Library [USA]
University of Saskatchewan Library [Canada]
University of York Library [UK]
Hellenic Academic Libraries Link (HEAL-Link) [Greece]
University of Groningen Library [Netherlands]
University of Newcastle [Australia]
University of Washington Libraries [USA]
University of Nevada, Reno [USA]
University Town Library of Shenzhen [China]
Charles Sturt University Library [Australia]
Library of Congress [USA]
Tsukuba Digital Library [Japan]
- eLibrary @ Cardiff University [UK]
- StarPlus - University of Sheffield [UK]
- FindIt @ The University of Edinburgh [UK]
- OneSearch - Lancaster University Library [UK]

- German National Library of Science and Technology (GetInfo) [Germany]
- eLIBRARY.RU [Russia]

Regular libraries:

1. Bulgaria, Sofia – National Library "St. St. Cyril and Methodius"
2. Bulgaria, Sofia – University of Sofia Library
3. Bulgaria, Sofia – Bulgarian Academy of Sciences (BAS) Central Library
4. Bulgaria, Sofia – BAS, Institute of Zoology Library
5. Bulgaria, Sofia – New Bulgarian University Library
6. Bulgaria, Plovdiv – National Library "Ivan Vazov"
7. Bulgaria, Plovdiv – University of Plovdiv Central Library
8. Bulgaria, Plovdiv – HIFFI Library
9. Bulgaria, Varna – National Library "Pencho Slaveikov"
10. Bulgaria, Varna – Varna Free University Library
11. Bulgaria, Stara Zagora – Regional Library "Zachariy Kniajevski"
12. Bulgaria, Stara Zagora – Tracian University Library
13. Bulgaria, Burgas – Library "Yavorov PK"
14. Bulgaria, Burgas – Burgas Free University Library
15. Serbia, Beograde – Srpska Akademija Nauka Library
16. Serbia, Nis – University of Nis Library
17. Slovenija, Ljubljana – Biblioteka Slovenskije Akademije
18. Russia, St. Petersburg – Scientific Library of St. Petersburg University
19. Russia, St. Petersburg – Russian Academy of Sciences Library
20. Russia, Voronezh – Voronezh State University – Zonal Scientific Library
21. Russia, Rostov, Rostov State University Scientific Library
22. Russia, Kazan – Scientific Library of Kazan State University
23. Russia, Moscow – Moscow Pedagogical Institute Gosudarstvennnogo Library
24. Russia, Moscow – All-Union Institute of Scientific and Technical Information (VINITI) Library
25. Russia, St. Petersburg – Scientific Research Institute of Plant Protection
26. Russia, St. Petersburg – Scientific Research Institute of Plants
27. Russia, Borok – Institute of Biology of Inland Waters Academy of Sciences Research Library
28. Lithuania, Vilnius – Lithuanian Academy of Sciences Library
29. Georgia, Tbilisi – Scientific Library of the Academy of Sciences of Georgia
30. Armenia, Yerevan – Yerevan State University Library
31. Armenia, Yerevan – Fundamental Library of the Academy of Sciences of Armenia
32. Ukraine, Kiev – Scientific Library of the University of Kiev
33. Ukraine, Kiev – Academy of Sciences of the Ukraine, the Central Scientific Library
34. Ukraine, Kiev – Scientific Library of the Lvovoskogo University
35. Moldova, Chisinau – Central Scientific Library of the Academy of Sciences of Moldova
36. Moldova, Chisinau – Kishinev State University Scientific Library Kazakhstan, Alma-Ata
37. Turkmenistan, Ashgabat – Turkmenistan Central Research Library
38. Tajikistan, Dushanbe – Tajik Academy of Sciences Library
39. Azerbaijan, Baku – Fundamental Library of the Academy of Sciences of Azerbaijan
40. Belarus, Minsk – Central Scientific Library of the Academy of Sciences of Byelorussia
41. Belarus, Minsk – Belarussian State University Library
42. Latvia, Riga – Latvian Academic Library
43. Romania, Galati – Universitati din Galati Library
44. Romania, Bucuresti – Biblioteca Centrala Universitara
45. Romania, Bucuresti – Roumaine de Biologie Institut de Stinte Biologice – Biblioteca
46. Poland,  Krakow – Boblioteka Jagiellonska
47. Poland, Poznan – Uniwersytet im. Adama Mickiewicza – Biblioteca Glowna
48. Poland, Uniwersytet Marii Curie – Skladowskiej – Biblioteca Glowna
49. Poland, Wroclaw – Polskie Towarrystwo Zoologiczne – Biblioteka
50. Czech Republic, Brno – Masaryk University, Faculty of Science, Central Library
51. Czech Republic, Brno – Universitini Knihovna Library
52. Czech Republic, Plzen -  Zapadoceske Museum – Knihovna vymen
53. France, Paris – Biblioteque Centrale du Museum National D`Historie Naturelle
54. France, Paris – Museum National D`Historire Naturelle – Laboratoire de Cryptogamie
55. France, Montpellier – Akademie des Sciences et Letters de Montpellier
56. England, North Yorkshire – Document Control Section – Zoological Record, BIOSIS
57. England, London – The Natural History Museum -  Acquisition Section
58. England, London – The Natural History Museum – General Library
59. Germany, Frankfurt – Senkenberg Natural History Society – Exchange Department
60. Italy, Pisa – Instituto di Entomologia Agraria Dell "Universita Degli Studi" Library
61. Italy, Genova – Museo Civico di Storia Naturale "Giacomo Doria"
62. Belgium, Brussel – Institute Royal des Sciences naturelles de Belgique
63. Switzerland, Bern – Naturhistorisches Museum Library
64. Spain, Barcelona – Museu de Zoologia Library
65. Spain, Barcelona – Institucio Catalona D`Historia Natural Filial de L`Institut D`Estudias Catalans
66. Spain, Museu de Naturals de la Cuitadella Biblioteca
67. Germany, Gottingen – Akademie der Wissenschaften