Chiappe, Luis     Anatomy and systematics of the confuciusornithidae (theropoda: aves) from the late mesozoic of Northeastern China [Текст] / Luis Chiappe, Shuan Ji, quang Ji, Mark Norell // Bulletin of the American museum of natural history. N 240 ; American museum of natural history - New York , 1999. — 89 p.:il.