W.  Sigbert, ?What are the valid names for the two genetically different taxa currently included within Pontia daplidice (Linnaeus, 1758)? (Lepidoptera: Pieridae)?, Nota LepidopterologicaNota Lepidopterologica, vol. 11, pp. 21-38, 1988.

, ?Colias erate Esper (1804): a true resident of the Greek butterfly fauna (Lepidoptera Pieridae)?, PhegeaPhegea, vol. 16, pp. 123-127, 1988.

, ?Evidence for speciation within nominal Pontia daplidice (Linnaeus, 1758) in southern Europe (Lepidoptera: Pieridae)?, Nota LepidopterologicaNota Lepidopterologica, vol. 11, pp. 7-20, 1988.