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  1. By: Simpson, Mark R. - Boutin, Stan
    Type: Article
    In: The Canadian field-naturalist
    Volume: 103
    Issue: 3
    Date: 1989
    Page Range: 420--422
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Simpson, Mark R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 104
    Issue: 3
    Date: 1990
    Page Range: 473--474
    Publication Info: Ottawa Ottawa Field-Naturalists' Club