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  1. By: Gess, F W - Gess, Sarah K - Gess, Robert W.
    Type: Article
    In: Journal of Hymenoptera research
    Volume: 4
    Date: 1995
    Page Range: 25--32
    Publication Info: Washington, D.C, International Society of Hymenopterists, [1992-
  2. By: Gess, Sarah K - Gess, F W - Gess, Robert W.
    Type: Article
    In: Journal of Hymenoptera research
    Volume: 6
    Date: 1997
    Page Range: 75--91
    Publication Info: Washington, D.C, International Society of Hymenopterists, [1992-