Bond, J. E., and P. E. Marek. “Rhinocricidae Systematics I: The Taxonomic Placement of the Species of Zipyge Chamberlin, 1925 and Oxypygides Chamberlin, 1922 (Diplopoda: Spirobolida: Rhinocricidae: Oxypyginae)”. Zootaxa, vol. 292, no. 1, Sept. 2003, pp. 1–8, doi:10.11646/zootaxa.292.1.1.