Offers access to a carefully maintained and easily searchable database of reviews, abstracts and bibliographic information for much of the mathematical sciences literature.

The Optical Society of America's online library for OSA flagship journals and for partnered and copublished journals.

The online archive of the backfiles of the American Physical Society Journals. Content extends to within 2 years of the present.

Science Direct is one of the largest collections (2 million articles and 40 million abstracts) of science, technology, and medical information.

Scopus offers broad coverage of scientific, technical, medical, and social sciences literature, including 100% Medline title coverage.