* تتار القرم* تاريخ رومانيا* Golubovsky Peter V. (1884) Pechenegs, Torks and Cumans before the invasion of the Tatars.
Historians claim a Bulgarian, Romanian or Cuman origin==Notes====Further reading==* Golubovsky Peter V. (1884) Pechenegs, Torks and Cumans before the invasion of the Tatars.