Sedimentary carbonate-hosted giant Bayan Obo REE-Fe-Nb ore deposit of Inner Mongolia, China; a cornerstone example for giant polymetallic ore deposits of hydrothermal origin - Chao, E.; Back, J.M.; Minkin, J.A.; Tatsumoto, M.; Junwen, Wang; Conrad, J. E.; McKee, E.H.; Zonglin, Hou; Qingrun, Meng; Shengguang, Huang (Bulletin, 1997)