Reference
Frederik Torp Petersen, Jakob Damgaard, Rudolf Meier (2006): DNA Taxonomy: How many DNA Sequences are needed for solving a Taxonomic Problem? The Case of two Parapatric Species of Louse Flies (Diptera: Hippoboscidae: Ornithomya Latreille, 1802) – Arthropod Systematics and Phylogeny – 65: 119 - 125.