ScienceDirect is a website which provides subscription-based access to a large database of scientific and medical research. It hosts over 12 million pieces of content from 3,500 academic journals and 34,000 e-books. The journals are grouped into four main sections: Physical Sciences and Engineering, Life Sciences, Health Sciences, and Social Sciences and Humanities. Article abstracts are freely available, but access to their full texts (in PDF and, for newer publications, also HTML) generally require a subscription or pay-per-view purchase.
Jason Bengtson. "ScienceDirect Through SciVerse: A New Way To Approach Elsevier". Medical Reference Services Quarterly. 30 (1): 42–49. doi:10.1080/02763869.2011.541346.
Carol Tenopir; Peiling Wang; Yan Zhang; Beverly Simmons; Richard Pollard. "Academic users' interactions with ScienceDirect in search tasks: Affective and cognitive behaviors". Information Processing & Management. 44 (1): 105–121. doi:10.1016/j.ipm.2006.10.007.
Hao-Ren Ke; Rolf Kwakkelaar; Yu-Min Tai; Li-Chun Chen. "Exploring behavior of E-journal users in science and technology: Transaction log analysis of Elsevier's ScienceDirect OnSite in Taiwan". Library & Information Science Research. 24 (3): 265–291. doi:10.1016/S0740-8188(02)00126-3.