1. 1) 町田洋,新井房夫:新編 火山灰アトラス,東京大学出版会,pp. 6-188, 2003.
2. 2) 北海道火山灰土の性質と利用に関する研究委員会:実務者のための火山灰土,地盤工学会北海道支部,2004.
3. PARTICLE BREAKAGE OF VOLCANIC COARSE-GRAINED SOILS AND ITS EVALUATION
4. 4) Nakata, T., Miura, S., Kawamura, S.: Particle breakage and its evaluation of volcanic coarse-grained soils, Proc. of International Symposium on Problematic Soils, Vol. 1, pp. 145-148, 1998.
5. STATIC AND CYCLIC SHEAR BEHAVIOR AND PARTICLE CRUSHING OF VOLCANIC COARSE GRAINED SOILS IN HOKKAIDO