1. Canuti P, Margottini C, Mucho R, Casagli N, Delmonaco G, Ferretti A, Lollino G, Puglisi C, Tarchi D (2005) Preliminary remarks on monitoring, geomorphological evolution and slope stability of Inca Citadel of machu Picchu (C101–1). In: Sassa K, Fukuoka H, Wang F, Wang G (eds) Landslides—risk analysis and sustainable disaster management. Springer, New York, pp 39–47
2. Cardinali M, Ardizzone F, Galli M, Guzzetti F, Reichenbach P (1999) Landslides triggered by rapid snow melting: the December 1996–January 1997 event in central Italy. In: Mediterranean Storms, Proceedings of the EGS Conference in Maratea, Italy, October 1999, Editoriale Bios, Cosenza, pp 439–448
3. Carlotto V, Cárdenas J, Romero D, ValdiviaW, Tintaya D (1999) Geología de los cuadrángulos de Quillabamba y Machupicchu, Hojas: 26-q y 27-q. INGEMMET, Lima
4. Carrara A, Cardinali M, Guzzetti F, Reichenbach P (1995) GIS technology in mapping landside hazard. In: Carrara A, Guzzetti F (eds) Geographical information systems in assessing. Natural Hazards, Kluwer Acad. Publ., Dordrecht, pp 135–176
5. Carreño R, Bonnard C (1997) Rockslide at Machupicchu, Peru. Landslide News 10:15–17