Датабази
For scientific papers search http://www.sci-hub.tw/
For e-books search https://libgen.is/
Meta-engine search.
BASE is one of the world's most voluminous search engines especially for academic open access web resources. BASE is operated by Bielefeld University Library.
As the open access movement grows and prospers, more and more repository servers come into being which use the "Open Archives Initiative Protocol for Metadata Harvesting" (OAI-PMH) for providing their contents. BASE collects, normalises, and indexes these data. Currently in BASE: 116,068,785 documents of 5,854 content sources
78, 508,126 #OpenAccess research papers/articles on one place. CORE database is aggregating the world’s open access research papers.
RePEc (Research Papers in Economics) is a collaborative effort of hundreds of volunteers in 93 countries to enhance the dissemination of research in Economics and related sciences. The heart of the project is a decentralized bibliographic database of working papers, journal articles, books, books chapters and software components, all maintained by volunteers.
So far, over 1,900 archives from 93 countries have contributed about 2.3 million research pieces from 2,800 journals and 4,500 working paper series. About 50,000 authors have registered and 75,000 email subscriptions are served every week.
9336 Academic peer-reviewed books and chapters from 233 publishers
Directory of Open Access Journals
Free Open Access to
- 9,744 Journals
- 5,673 searchable at Article level
- 147 Countries
- 1,573,847 Articles
is an online project intended to create "one web page for every book ever published". Created by Aaron Swartz,[2][3] among others, Open Library is a project of the non-profit Internet Archive and has been funded in part by a grant from the California State Library and the Kahle/Austin Foundation. The World's classic literature at your fingertips. Over 1,000,000 free ebook titles available.
The OAPEN Library contains freely accessible academic books, mainly in the area of Humanities and Social Sciences.