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  1. By: Briggs, Derek E. G. (Derek Ernest Gilmor), - Bartels, Christoph
    Type: Article
    In: The Bulletin of zoological nomenclature
    Volume: 60
    Date: 2003
    Page Range: 269--271
    Publication Info: London International Trust for Zoological Nomenclature
  2. By: Ruta, M - Bartels, Christoph
    Type: Article
    In: Palaeontology
    Volume: 41
    Date: 1998
    Page Range: 771--806
    Publication Info: London, Palaeontological Association, 1957-