U.S. Department of Energy's search interface. Many options for fine tuning a search.
Mathematics preprint search engine. Includes some European servers not covered elsewhere.
Searches a collection of mathematical and statistical preprint servers and databases.
Search enabled database of citations for a large selection of mathematical specialties. Authors may add bibliographic lists or contextual references to their work.
Full text access to the journal Annals of Mathematics; a limited number of other journals available through paid subscriptions to Project Euclid.
EUropean Libraries and Electronic Resources in mathematical sciences. Searches books, preprints, proceedings, serials, technical reports, theses, and web-pages.
Search enabled database of citations for a large selection of computer science specialties. Authors may add bibliographic lists or contextual references to their work.
Experimental demonstration of the Open Citation Project. Search citations by paper or author.
E-Print search engine. Includes some archives not indexed by other engines (see the "Data Providers" pull-down menu). Use as a guest or register and receive free targeted alerts and other personalized features.
Covers many free full-text mathematics and scientific journals (most are peer reviewed).