“…5,6,7 In 2015, upon the twenty-year benchmark of the original data collection, Oguz and Koehler reported in JASIS that only 2 of the original links remained active. 8 A number of foundational studies, including Casserly and Bird, 9 Spinellis, 10 Sellitto, 11 Falagas, Karveli, and Tritsaroli, 12 and Wagner et al 13 have reported on linkrot occurring in professional literature. Sanderson, Phillips, and Van de Sompel provide a table of 17 well-known linkrot studies, comparing overall benchmarks, and supplying a succinct summary of the scope of each study.…”