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  1. By: Roland, Carl A. - Cook, Mary B.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 112
    Issue: 1
    Date: 1998
    Page Range: 158--160
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Cook, Mary B. - Roland, Carl A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 116
    Issue: 2
    Date: 2002
    Page Range: 192--304
    Publication Info: Ottawa Ottawa Field-Naturalists' Club