Identifying STEM Research Papers Using Freely Available Indexes and Bibliography Tools - School of Science and Engineering

One of the pioneering pre-print servers, with origins in the High Energy Physics research community. Pre-prints are manuscripts and papers posted here in advance of peer review for publication. Subject areas include computer science, mathematics, and statistics.

CiteSeerX is an evolving scientific literature digital library and search engine that has focused primarily on the literature in computer and information science. Rather than creating just another digital library, CiteSeerx attempts to provide resources such as algorithms, data, metadata, services, techniques, and software that can be used to promote other digital libraries.

Hosts more than 100 publications from over 35 partner publishers worldwide. Over 2.5 million pages of theoretical and applied mathematics and statistics scholarship.

zbMATH Open (formerly known as Zentralblatt MATH) is the world's most comprehensive and longest-running abstracting and reviewing service in pure and applied mathematics. Contains around 4.4 million bibliographic entries with reviews or abstracts drawn from more than 3,000 journals and book series, and some 190,000 books.