Bui Hoang Bac, Ngo Xuan Thanh, Yungoo Song, Tetsumaru Itaya, Koshi Yagi, Khuong The Hung, and Nguyen Tien Dung (2016) K-Ar Dating of Fault Gouges from the Red River Fault Zone of Vietnam. ACTA GEOLOGICA SINICA (English Edition) v.90(5), p.1801-1811.