International Commission on Zoological Nomenclature. 1958. Opinion 525. Determination of the relative precedence to be accorded to the names Coluber pictusGmelin (J.F.), [1789], and Coluber boigaLacépède, 1789 (Class Reptilia) . pp. 277–290 InHemming, F. (Ed.). Opinions and Declarations of the International Commission on Zoological Nomenclature. Volume 19. International Trust for Zoological Nomenclature: London. BHL