Gao, Keqin     Taxonomic composition and systematics of late cretaceous lizard assemblages from Ukhaa Tolgod and adjacent localities, Mongolian Gobi desert [Текст] / Keqin Gao, Mark Norell // Bulletin of the American museum of natural history. N 247 ; American museum of natural history - New York , 2000. — 118 p.: il.