Oxford University Research Archive (ORA) 
Consists of journals, books, dissertations, conference papers and other scientific works with open access.
HighWire Press – Stanford University 
Consists over 2 million open access articles.

European Patent Office 
Offers over 110 million patents from all over the world.

Full-text access to peer-review journals in various science fields.

Journals for Free
Offers open access to over 17 000 scientific journals.

Directory of Open Access Journals 
Consists of nearly 4 million articles published in more than 13 251 journals from all over the world.

The Digital Commons Network 
Offers open access to more than 3 million articles from more that 590 institutions.

Index Copernicus 
Indexes more than 2500 journals from all over the world selected by certain criteria.

Consists of over 1.5 million full-text articles published in more than 4200 journals. There is a full-text search for most of them.

Consists of more than 750 000 full-text resources.

Offers access to more than 985 full-text journals.

Repository of e-preprints and articles.

CogPrints: Cognitive Sciences Eprint Archives 
E-archive where authors present their scientific publications.

OMICS International 
Offers access to more than 700 leading peer-review journals.

Indexes more than 240 peer-review open access journals in all science fields.

Scientific Research Publishing  (SCIRP) 
Offers open access to more than 200 academic journals.

Russian Science Citation Index 
Bibliographic database which offers reference search. Some of the resources are full-text.

SCIndeks - Serbian Citation Index 
Offers access to more than 250 journals published in the Republic of Serbia. 

Научная электронная библиотека „КиберЛенинка” 
A scientific digital library which consists of more than 2 million articles in Russian.


Университетска библиотека "Св. Климент Охридски" 2014