arXiv.org is an electronic archive that provides articles in areas of physics, mathematics, non-linear science and computer science. arXiv is maintained and operated by the Cornell University Library with guidance from the arXiv Scientific Advisory Board.
The National Science Digital Library is a digital library of educational resources for social science, science, technology, engineering and mathematics. For all education levels, elementary through higher education.
NASA Astrophysics Data System draws abstracts from a variety of national and international scientific sources. The abstracts are divided into four sets: astronomy and astrophysics, instrumentation, physics and geophysics, and the ArXiv Preprints archive.
DOE Information Bridge provides access to full-text and bibliographic records of Department of Energy (DOE). It also contains research and development reports in physics, chemistry, materials, biology, and environmental sciences.
Over 800,000 bibliographic records, including 360,000 fulltext documents, of interest to people working in particle physics and related areas. Covers preprints, articles, books, journals, photographs, and much more.