1. Cojean R. Role of water as triggering factor for landslides and debris flow. In: International conference and field workshop on floods, Trente, Italy, 1994.
2. Reconstructing recent landslide activity in relation to rainfall in the Liobregat River basin, Eastern Pyrenees, Spain;Corominas;Geomorphology,1999
3. Landslide hazards and mitigation measures at Gantok Sikkim Himalaya;Bhasin;Eng Geol,2002
4. Tullen P. Methods of hydrogeologic analysis of the operation of the unstable slopes. Ph.D. thesis 2622, Federal Polytechnic School of Lausanne, Switzerland, 2002.
5. The June 27, 2001 landslide on volcaniccones in Limbe, Mount Cameroon, West Africa;Ayonghe;J Afr Earth Sci,2004