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NASA Astrophysics Data System

ADS consists of three searchable, bibliographic databases: Astronomy and Astrophysics, Physics and Geophysics, and ArXiv e-prints. It contains over 4.7 million records and includes citations and abstracts, electronic preprints, some full-text articles, and some digitized historical literature
Available to everyone.
Search Hints:
Truncation is not supported in Scirus searches. To search using Boolean operators, you must use both search boxes. Do not enter "AND", "OR" or "NOT" in one search box. When searching for authors, try searching in the format "Last, F" as well as "Last, First". To do that in one search, use both search boxes connected by "OR". The first 4010 records retrieved by each search are available through MetaLib. Year searches are done in All Fields.