LibraryOther resources

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Free electronic resources


Znam.bg

Online portal for general education.


Bentham Open Access

Free journals by Bentham Science Publishers.


DOAJ

Directory of Open Access Journals - online directory that indexes and provides access to quality open access, peer-reviewed journals.


DSpace

Electronic repository of Institute of mathematics and informatics at Bulgarian academy of sciences.


E-thesis-Electronic Publications at the University of Helsinki

This site contains doctoral dissertations and other publications from the University of Helsinki.


EUR-Lex

Free access to European Union Law.


OpenDOAR - Directory of Open Access Repositories

The OpenDOAR service provides a quality-assured listing of open access repositories around the world.

 

Web search engines


BASE

Multi-disciplinary search engine for scientifically relevant web resources which was created and developed by Bielefeld University Library.


Google Book Search

Search engine for books.

 

Google Scholar

Search engine for scientific information.

 

Library catalogues


НАБИС

National academic library and information system.

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Worldcat

Bibliographic information for documents in different languages and the nearest library they can be found in.