Free online resources

Open access to 878,979 e-prints in Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics.
Free online information resources in Еconomics.
Information resources produced by Thomson Reuters in the field of life science/biology.  
Index of open access scientific and scholarly journals.
Open Access Infrastructure for a Future Web of Culture and Science. 
European Commission Libraries Catalogue.

Electronic Journals Library - University Library of Regensburg 
Electronic library of magazines of the University Library of Regensburg, Germany - service that provides access to full text scientific periodicals, selected from all over the world in different subject areas. The level of access varies: marked in green are freely available journal titles, those marked with yellow are with restricted access and in red are e-journals subscribed by relevant stakeholders. Contents with abstracts can be seen in many cases.
Pan-European Online Space. 
European cultural collections.
Free access to European Union law. 
Online digital library of education research and information.
The Largest Archive of Free Online Full-text Articles.
International bibliographic database maintained by the UNESCO for translations with a chronological range of 1979 to date.
Virtual Union Catalogue.
Bulgarian specialized gate for Literature and Humanities.
More than 23 million citations for biomedical literature from MEDLINE, life science journals, and online books. 
A free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine. 
Register of journals in the digital collection of PubMed Central (PMC). 
The largest social networking site Research GATE for scientists and researchers. Research GATE searches in metadata of publications by combining own resources from user profiles with those of different universities and institutes and provides information on publications on the relevant topic. 
United Nations Bibliographic Information System.
Electronic library covering a selected collection of Brazilian scientific journals.
Records of more than 100 peer-reviewed scientific journals in all disciplines.
World digital library supported by UNESCO.  
Global Union Web-Catalogue.
Free access to over 5000 books.
Part of Springer Science+Business Media, BioMed Central publishes 258 peer-reviewed open access journals.

DAPHNE (Data in Archaeology, Prehistory and History on the Net
Portal of CNRS (Centre National de la Recherche Scientifique) providing a single entry point to free subject-oriented bibliographic databases in Prehistory, Protohistory, Archaeology (from early human evidences to the industrial era), Sciences of Antiquity (all aspects: religion, politics, society, philosophy, economics, art, daily life, etc.) and History until the year 1000 on all continents. 
EThOS – Electronic theses online service
UK’s national thesis service which aims to maximise the visibility and availability of the UK’s doctoral research theses.

Web information desk for detection and requests of scientific and technical publications from the collections of the Institute for Scientific and Technical Information INIST (INstitut de l'Information Scientifique et Technique) of France.
Electronic archives and documents library
Contains a number of articles, studies and monographs, devoted to the creation, development and promotion of archival and documentary studies as scientific and practical knowledge in the system of humanities. Thematic scope of most of the publications focuses on the past, present and future state of Bulgarian archival studies and traditions, but there are also many materials reflecting the achievements of leading archival schools worldwide. Essential part of the library is formed by the digitized directories of individual structural units of our national archival network, through which the information about the composition and content of the National Archives of the Republic of Bulgaria is generally accessible. Thanks to the digitized editions of documents, readers have the opportunity to experience the testimonies of the past and gain deep insight with the help of the existing historiography.
Bibliographic databases in social sciences and humanities.

Университетска библиотека "Св. Климент Охридски" 2014