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  1. By: Nijssen, H - Isbrücker, I J H
    Type: Article
    In: The Bulletin of zoological nomenclature
    Volume: 32
    Date: 1975
    Page Range: 63--64
    Publication Info: London International Trust for Zoological Nomenclature
  2. By: Isbrücker, I J H - Nijssen, H
    Type: Article
    In: Spixiana
    Volume: 8
    Date: 1985
    Page Range: 221--229
    Publication Info: Mchen, Zoologische Staatssammlung Mchen,