Skeat, Walter William; Presidential address on 'Ghost-Words' in: 'Transactions of the Philological Society, 1885-7, pages 343-374'; Published for the society by Trübner & Co., Ludgate Hill, London, 1887. May be downloaded at: https://archive.org/details/transact188500philuoft
Michael Carr (1983), "A Lexical Ghost Story: *Vicious hair", Jinbun Kenkyū (人文研究), 66: 29-44. Carr (p. 40) suggests "vicious hair" for kusege (癖毛) originated through false analogy from Kenkyusha's waraguse (悪癖 "bad/vicious habit; vice") entries.
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“dord”. Dictionary.com, LLC. 2012年2月21日閲覧。 “In sorting out and separating abbreviations from words in preparing the dictionary's second edition, a card marked "D or d" meaning "density" somehow migrated from the "abbreviations" stack to the "words" stack.”