Kouhei Sawa
- Identification of Quantities of Coloured Minerals and Degrees of Weathering Using Representation Method of MASA (Decomposed Granite Soils) Colour. In: Soils and Foundations, v. 13, n. 1 (March 1973). (1973):
- The Identification of Weathering Patterns and their Representation Methods Based on Observations of Broken Surface on Decomposed Granites. In: Soils and Foundations, v. 12, n. 4 (December 1972). (1972):