 | | Search engines |
|  | Academic Reference and Research Index (www.academicindex.net/)Meta-Search Engine that is supported by Dr. Michael Bell. It grants access to 137000 scholarly resources. |
| | BASE (base-search.net)scholarly resource, Bielefeld Academic Search Engine (BASE) under international Open Archives Initiative project. It cooperates with DRIVER, European scientific-and-information project . |
| | CiteUlike (www.citeulike.org/)A free service that provides keeping, organizing and distributing of scholarly articles in various fields. At this moment (19.09.2012), 6,327,232 articles are covered. |
| | CiteSeerX (citeseerx.ist.psu.edu)is a scientific literature digital library and search engine that focuses primarily on the literature in computer and information science. Indexes now 1.5 million documents. |
| | CS-structure Academic Search (cs-structure.inr.ac.ru/)Scholarly Search that expands and simplifies search over CiteSeer. |
| | ChemRefer (www.chemrefer.com/)Search engine for free access chemical and pharmaceutical literature. |
| | Google Scholar (scholar.google.com)search engine of articles, patents, journals, reviews, responses, etc. |
| | INFOMINE (infomine.ucr.edu)virtual library of scientific and educational journals includes various Internet-resources: namely, databases, e-magazines, books, bulletin boards, mailing lists, library online-catalogues, directories, etc. |
| | Microsoft Academic Search (academic.research.microsoft.com/)Sholarly search engine Microsoft Research that ensures search over 38840259 articles in various fields and over 19162593 authors. |
| | OAIster (oaister.worldcat.org/)OCLC sholarly search portal. |
| | Research Beyond Google (oedb.org/library/college-basics/research-beyond-google)119 references are included because of their authoritative nature. They index both searchable Internet and "Invisible web (deep web)" |
| | RefSeek (www.refseek.com)RefSeek is a search engine for students and scientists. |
| | Science.gov (www.science.gov)a search over 40 largest databases and 2 thousand sites that contain more than 200 million documents, articles, and reports concerning the research and developmental works of the USA government agencies. |
| | Science-advisor.net (science-advisor.net)a search over free-access articles and online-forum for scientific discussions. |
| | ScienceResearch (scienceresearch.com)Free public search engine over scientific resources. It includes about three hundred of data bases, electronic libraries, and other sources of scientific publications. |
| | Scientific Commons (www.scientificcommons.org)Searche engine of articles, theses and other scientific publications in open access. SC has indexed about 13 million scientific publications. |
| | Scirus (www.scirus.com)search engine for scientific information. |
| | SciVerse-HUB (www.hub.sciverse.com/action/home)scholarly search engine that enables analyzing the content of scholarly repositories, journal and book collections, and scholarly Internet as a whole. |
| | Trove (trove.nla.gov.au/)A resource of National Library of Australia is supported since 2009. The reference over more than 100 million of Australian and online resources. Combined search engine over university repositories, magazine preprints, conference reports, images and other. |
| | Wolfram Alpha (www.wolframalpha.com/)A combined search engine that provides the linguistic analysis, mathematic calculations of any level, and information output in all modern-day formats. |
| | WorldWideScience (worldwidescience.org)is a global science gateway connecting you to national and international scientific databases and portals. WorldWideScience.org accelerates scientific discovery and progress by providing one-stop searching of global science sources. |
