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2. The term “reference rot” was introduced by the Hiberlink team. “Hiberlink – About,” accessed March 31, 2016, http://hiberlink.org/about.html.
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21. For a recent overview, see Sarah Potvin and Santi Thompson, “An Analysis of Evolving Metadata Influences, Standards, and Practices in Electronic Theses and Dissertations,” Library Resources & Technical Services 60, no. 2 (March 31, 2016): 99–114, https://doi.org/10.5860/lrts.60n2.99.
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35. “In Search of the Perfect URL Validation Regex,” accessed December 7, 2015, https://mathiasbynens.be/demo/url-regex. We selected "@gruber v2" for our extraction.
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37. We have used the term "memento" in lowercase to denote a snapshot souvenir page, to distinguish from an automated service utilizing the Memento protocol.
38. For a good overview of the types of problems, see Michael L. Nelson, Scott G. Ainsworth, Justin F. Brunelle, Mat Kelly, Hany SalahEldeen and Michele Weigle, "Assessing the Quality of Web Archives" 1 vol., Computer Science Presentations, Book 8 (Old Dominion University. ODU Digital Commons, 2014). http://digitalcommons.odu.edu/computerscience_presentations/8.
39. Shawn M. Jones, et al. “Scholarly Context Adrift," https://doi.org/10.1371/journal.pone.0167475.
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43. Tim Gollins. “Parsimonious Preservation: Preventing Pointless Processes! (The Small Simple Steps That Take Digital Preservation a Long Way Forward),” in Online Information Proceedings UK National Archives, 2009. Available at http://www.nationalarchives.gov.uk/documents/information-management/parsimoniouspreservation.pdf.
44. Margaret Hedstrom, "Digital preservation: a time bomb for digital libraries." Computers and the Humanities 31, no. 3 (1997): 189-202. https://doi.org/10.1023/A:1000676723815.
45. Zittrain, Albert, and Lessig, "Perma," https://doi.org/10.1017/S1472669614000255.
46. Herbert Van de Sompel, Michael L. Nelson, Robert Sanderson, Lyudmila L. Balakireva, Scott Ainsworth, and Harihar Shankar, “Memento: Time Travel for the Web,” arXiv:0911.1112 [Cs], November 5, 2009, http://arxiv.org/abs/0911.1112.