	Authors	Year	Title
	Kotlyar, Popov & Gus'kov	1999	Kungurian/Ufimian Boundary in Pai-Khoy. [G.V.Kotlyar, A.A.Popov, V.A.Gus'kov & S.K.Pukhonto]. Permophiles, 35: 27-29, 3 figs., Boise, ID.