1. Baum RL, Godt W (2010) Early warning of rainfall-induced shallow landslides and debris flows in the USA. Landslides 7(3):259–272
2. Brunetti MT, Peruccacci S, Rossi M, Luciani S, Valigi D, Guzzetti F (2010) Rainfall thresholds for the possible occurrence of landslides in Italy. Nat Haz Earth Syst Sci 10(3):447–458
3. Caine N (1980) The rainfall intensity: duration control of shallow landslides and debris flows. Geografiska annaler: series A, physical geography. Svenska Sallskapet för Antropologi och Geografi (Swedish Soc Anthropol Geogr) 62(1/2):23–27
4. Campbell RH (1975) Soil slips, debris flows, and rainstorms in the Santa Monica mountains and vicinity geological survey professional paper. US Geological Survey Professional Paper, Southern California, p 851
5. Committee for Publication of Oshima's History (2000) General Summary of Oshima History, p.765 (in Japanese).