Cordero, P. J., V. Llorente, P. Cordero, and J. Ortego. “Recognizing Taxonomic Units in the field—The Case of the Crickets Oecanthus dulcisonans Gorochov 1993, and O. Pellucens (Scopoli, 1763) (Orthoptera: Gryllidae): Implications for Their Distribution and Conservation in Southern Europe”. Zootaxa, vol. 2284, no. 1, Nov. 2009, pp. 63–68, doi:10.11646/zootaxa.2284.1.5.