1. Agliardi, F., Crosta, G.B., Zanchi, A., and Ravazzi, C. (2009): Onset and timing of deep-seated gravitational slope deformations in the eastern Alps, Italy, Geomorphology, Vol. 103, pp. 113–129.
2. Ito, T., Utomo, E. P., and Soedradjat, G. M. (2009): A study on Jember landslide and mudflow disasters in East Java, Indonesia, Japan Society for Natural Disaster Science, Vol. 27, No. 4, pp. 363–374.
3. Iwamatsu, A., and Shimokawa, E. (1986): Creep-type large scale landslides of well-cleaved argillaceous rocks, the memories of the Geological Society of Japan, Vol. 28, pp. 67–76.
4. Takezawa,N., Uchida, T., Yokoyama, O., Tamura, K., Ishizuka, T., Suzuki, K., and Miyajima, M. (2012): Assessment of deep catastrophic landslides susceptibility to earthquake, International Journal of Japan Erosion Control Engineering, Vol. 5, No. 1, pp. 27–36.
5. Tamura, K., Uchida, T., Suzuki, T., Terada, H., and Kurihara, J. (2008): Manual on the method for extraction of torrents prone to a massive landslide occurrence, Public Work Research Institute Data No. 4115.