BioStor
 | The classification of the British Mollusca W E Leach (1847) Annals and magazine of natural history 20: 267-273 |
 | Proposed use of the Plenary Powers for the purpose of securing that the name bullata Muller (O. F.), 1776, as published in the combination Akera bullata, shall be the oldest available name for the species currently so known (Class Gastropoda) H Lemche (1957) Bull. Zool. Nom. 13: 3-8 |