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							Google Scholar - Stand on the shoulders of giants (Tracking is 'free')
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							Indiana University - Digital Library of the CommonsCheck out the DLC to find international literature including free and open access full-text articles, papers, and dissertations. 
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							Infomine - UC Riverside LIbraryThe Infomine is an incredible tool for finding scholarly Internet resource collections, especially in the sciences. 
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							Internet Public LibraryFind resources by subject through the Internet Public Library’s database. 
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							Microsoft Academic SearchMicrosoft’s academic search engine offers access to more than 38 million different publications, with features including maps, graphing, trends, and paths that show how authors are connected.