Комментарии:EAS 56, KW 31, Владимирцов 147-148, ОСНЯ 3, 91-92, Sinor 1981 (listing all forms but considering the Turkic word to be borrowed from Ugric), Дыбо 15, Мудрак Дисс. 194. Despite TMN 1, 216, 2, 258, Щербак 1997, 104 the Mong. form is hardly borrowed from Turk. Jpn. *pá-i presupposes a form *pi̯ắl(a)-gV = TM *palVga etc. Note that this is a case of monophthongization after *p- in TM (cf. similarly *pi̯àri, *pi̯ā̀ki).