^Tailleur O. G., Le dialecte tchouvane du youkaghir, "Ural-Altaische Jahrbücher", Wiesbaden, 1962, Bd 34.
^Matyushkin FF, Collection of the words of the Chuvansky and Omok languages, in: Vrangel F.P., Journey through the northern shores of Siberia and along the Arctic Ocean, accomplished in 1820-1824, Part 2, Additions, St. Petersburg, 1841;