CiteSeer.ist - E-print database of mathematics and science papers with citation information. Papers may be added by specifying the URL where their files reside. Directory of Open Access Journals - Covers many free full-text mathematics and scientific journals (most are peer reviewed). Front for the LANL ArXiv - Easiest search access to papers posted on the preeminent Los Alamos National Lab (LANL) Physics and Mathematics preprint server (arXiv). Bibliographies on Mathematics - Search enabled database of citations for a large selection of mathematical specialties. Authors may add bibliographic lists or contextual references to their work. Project Euclid - Full text access to the journal Annals of Mathematics; a limited number of other journals available through paid subscriptions to Project Euclid. Hypertext Bibliography Project - Search enabled database of citations for a large selection of computer science specialties. Authors may add bibliographic lists or contextual references to their work. E-print Network - U.S. Department of Energy's search interface. Many options for fine tuning a search.