M. L. I. Judson, “Nomenclatural problems associated with the generic names Obisium Leach, 1814, Blothrus Schiödte, 1847 and Neobisium Chamberlin, 1930 (Arachnida: Chelonethi)”, Zootaxa, vol. 3475, no. 1, pp. 21–35, Sep. 2012.