COLLECTED BY
Collection: MSAG-PDF-CRAWL-2017
Microsoft Academic Graph public corpus (Feb 2016) PDF URLs, filtered to remove large sites (pubmed, citeseerx, arxiv) and already-crawled URLs.
TIMESTAMPS
The Wayback Machine - https://web.archive.org/web/20170810085620/http://www.ece.ucdavis.edu/~vojin/CLASSES/EEC272/S2005/Papers/IBM360-Amdahl_april64.pdf