Комментарии:Дыбо 11, Whitman 1985, 193, 231, Menges 1984, 274-275. Basically an Eastern isogloss: the Turkic forms of the type koz are most probably borrowed from Iranian. There are also forms reflecting *koŕak (VEWT 285), but they may also reflect a contamination of the root *Koŕ (or the borrowed koz) with the genuine root *kusɨk (e.g. Tuva ku"suk), see *kušu.
