<ref name="Karavaiev_1928">{{cite journal |first1=V. |last1=Karavaiev |year=1928 |title=Eine anormale Thoraxbildung bei ''Formica'' ''rufibarbis'' F. (Fam. Formicidae) |url= |journal=Zbirnyk Prats' Zoolohichnoho Muzeyu |publisher= |volume=5 |issue= |pages=169–170 [= Trudy. Ukrains'ka Akademiya Nauk. Fizichno–Matematichnoho Viddilu 6:473–474]. |doi= }}</ref>