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  1. By: Catling, Paul M. - Knerer, G
    Type: Article
    In: The Canadian field-naturalist
    Volume: 94
    Issue: 4
    Date: 1980
    Page Range: 435--438
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Knerer, G
    Type: Article
    In: Entomological news
    Volume: 80
    Date: 1969
    Page Range: 141--147
    Publication Info: [Philadelphia], American Entomological Society, 1925-