Indexes citations and abstracts of the mathematics and statistics literature.
Provides open access to e-prints in physics, mathematics, computer science, quantitative biology, quantitative finance, and statistics.
Includes academic freely available ebooks.
Portland State University's Digital Repository, PDXScholar, preserves the University's research, unique resources, and other scholarly output with the goal to provide persistent, open access to that work.
Maintains citation searching for high impact research journals in the arts and humanities, social sciences, and sciences.