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Scirus - http://www.scirus.com/srsapp/
Search engine that fetches only scientific websites. |
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CiteSeer - http://citeseer.ist.psu.edu/
Search engine for computer science and related matters. For all results number of citations are given which allows to estimate the importance of a paper in a given context. Most of the papers are cached and available for direct download as postscript or PDF. |
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ISI Highly Cited - http://isihighlycited.com/
A search tool to identify individuals, departments and laboratories that have made fundamental contributions to the advancement of science and technology in recent decades. |
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SciSeek - http://www.sciseek.com/
Science search engine and directory. Also provides forums, tools and related news. |
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Article Sciences - http://articlesciences.inist.fr/
Scientific article search and order engine, a service provided by Institut de l'Information Scientifique et Technique (INIST) of Centre National de la Recherche Scientifique (CNRS), France. |