1. Concentrated rainfall and slope failure (in Japanese);Aboshi;Sekou-gijyutu,1972
2. Multivariate Statistics (a Practical Approach);Flury,1983
3. Shirasu slpe failure due to rainfall (in Japanese);Haruyama;Tuchi-to-Kiso,1983
4. Modern inspection and maintenance procedure for railway structures (in Japanese);Japanese National Railways;Japan Railway Civil Engineering Association,1974
5. Prediction of safety level of cut slope failure (in Japanese);Kobashi,1974