Комментарии:Владимирцов 318, Колесникова 1972а, 89-91. A Western isogloss. Despite Щербак 1997, 121 Mong. is not < Turk. Turk. *jagɨr represents in fact a merger of two different original roots (see *ńĕka). See also TMN 4, 177-178 (with unconvincing criticism).