Geology, geochemistry and genesis of the Bonga carbonatitetype niobium deposit, Angola.
ZHANG Yong-Mei, GU Xue-Xiang, BANG Xi-Wei, ZHENG Ge, ZHANG Yan, GAO Hai-Jun, DONG Shu-Xi
Earth Science Frontiers . 2014, (5): 50 -68 .  DOI: 10.13745/j.esf.2014.05.006