AOKI, M. Studies on a red colored soil derived from basaltic andesite of Shibayama, I. General descriptions of the site and chemical characteristics of the soil. Soil Science and Plant Nutrition. 1969, 15, 15-20
AOKI, M. Studies on a red colored soil derived from basaltic andesite of Shibayama, II. Mineralogical studies (1). Soil Science and Plant Nutrition. 1969, 15, 21-27
AOKI, M. Studies on a red-colored soil derived from basaltic andesite of Shibayama, III. Mineralogical studies (2). Soil Science and Plant Nutrition. 1970, 16, 87-94