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  1. By: Freytag, Paul H - Covell, Charles V. - Kopp, D D
    Type: Article
    In: Entomological news
    Volume: 92
    Date: 1981
    Page Range: 133--137
    Publication Info: [Philadelphia], American Entomological Society, 1925-
  2. By: Balsbaugh, Edward U. (Edward Ulmont), - Kopp, D D - Scholl, C
    Type: Article
    In: The Coleopterists' Bulletin
    Volume: 33
    Issue: 4
    Date: 1979
    Page Range: 455--458
    Publication Info: [Washington, D.C. etc.], Coleopterists' Society,