Huzita, K. and Maeda, Y. (1984) Geology of the Suma district. With Geological Sheet Map at 1:50,000, Geol. Surv. Japan, 101 p (in Japanese with English abstract).
abstract). Ishihara, S. (2003) Chemical contrast of the Late Cretaceous granitoids of the Sanyo and Ryoke Belts, Southwest Japan: Okayama - Kagawa transect. Bull. Geol. Surv. Japan, 54, 95-116.
Ishihara, S. and Chappell, B. W. (2007) Chemical compositions of the Late Cretaceous Ryoke granitoids of the Chubu District, central Japan 窶迭evisited. Bull. Geol. Surv. Japan, 58, 232-350.
Ishihara, S. and Wu, C. (2001) Genesis of late Cretaceous - Paleogene granitoids with contrasting chemical trends in the Chubu District, central Japan. Bull. Geol. Surv. Japan, 52, 471-491.