Reference
Florian M. Steiner, Birgit C. Schlick-Steiner, Karl Moder (2006): Morphology-based cyber identification engine to identify ants of the Tetramorium caespitum/impurum complex (Hymenoptera: Formicidae). – Myrmecological News = Myrmecologische Nachrichten – 008: 175 - 180.