Fossils from the environs of Tokyo, Journal of the College of Science, Imperial University
of Tokyo, 1906, v.21, article 2
Report of diggings at Ho-chia-kou, Ku-hsiang-tung, Kirin, Manchoukou / By Shigeyasu
Tokunaga and Nobuo Naora. - [Tokyo?] : [s.n.], 1934.