Work found, with species-group names introduced therein:
Boyer, F. 2004. Les groupes Gibberula frumentum (Sowerby, 1832) et G. pulchella (Kiener, 1834) dans l'Atlantique occidental. Novapex 5 33-42. [Stated date: 10 Apr 2004; true date: pre 11 May.] Gibberula moscatellii, see Persicula moscatellii (F. Boyer, 2004)
