Academic OneFile
– Journal articles from more than 8,000 scholarly and general periodicals across all fields of study. Indexing from 1980 to present; full-text from 1989 to present. Brought to you by the State of Michigan via the Michigan eLibrary (http://mel.org).
ACM Digital Library
– A collection of citations and full text from the Association for Computing Machinery publications. Includes journal and newsletter articles and conference proceedings.
Gale Virtual Reference Library
– Over 2 dozen scholarly reference books across a variety of subjects. Brought to you by the State of Michigan via the Michigan eLibrary (http://mel.org).
Google Scholar
– Journal articles, books, and other resources across many subjects. Provides a "cited by" feature to indicate other papers containing a source paper as a reference.