Energy Citations Database (ECD) [http://www.osti.gov/energycitations/] - The Energy Citations Database (ECD) provides free access to over two million science research citations from 1948 through the present, with continued growth through regular updates. There are over 140,000 electronic documents, primarily from 1994 forward, available via the database. Citations and documents are made publicly available by the U.S. Department of Energy (DOE).
ECD includes scientific and technical research results in disciplines of interest to DOE such as chemistry, physics, materials, environmental science, geology, engineering, mathematics, climatology, oceanography, computer science and related disciplines. It includes bibliographic citations to report literature, conference papers, journal articles, books, dissertations, and patents. (Description provided by ECD)