Frias Martins, A. M. de. (1981). Oxychilus (Drouetia) agostinhoi new species (Stylommatophora: Zonitidae) from the Azores Islands, its anatomy and phylogenetic relationships. Occasional Papers on Mollusks. 4: 245–264.
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Frias Martins, A. M. de
1981
Oxychilus (Drouetia) agostinhoi new species (Stylommatophora: Zonitidae) from the Azores Islands, its anatomy and phylogenetic relationships