Csősz, S., and A. Schulz. “A Taxonomic Review of the Palaearctic Tetramorium Ferox Species-Complex (Hymenoptera, Formicidae)”. Zootaxa, vol. 2401, no. 1, Mar. 2010, pp. 1–29, doi:10.11646/zootaxa.2401.1.1.