CiteSeerX - Pennsylvania State University
https://citeseer.ist.psu.edu/
Scientific Literature Digital Library incorporating autonomous citation indexing, awareness and tracking, citation context, related document retrieval, similar document identification, citation graph analysis, and query-sensitive document summaries. Advantages in terms of availability, coverage, timeliness, and efficiency. Isaac Councill and C. Lee Giles.
DA: 42 PA: 77 MOZ Rank: 34