1. Antolin, C., 1998. Evaluación de pérdida de suelo por erosion hídrica. In: “El suelo como recurso natural de la Comunidad Valenciana”. Generalitat Valenciana, Conselleria d'Obres Publiques, Urbanisme i Transports, Valencia, Spain.
2. Factors and processes of soil degradation in vertisols of the Pruna valley, Maharashira, India;Balpande;Land. Degrand. Dev.,1996
3. Development of a soil degradation and vulnerability database for central and eastern Europe (SOUVER project);Batjes;Eur. Soil Science,2000
4. Soils and degradation in the slovak republic.;Bielek,1999
5. Global assessment human-induced soil degradation (GLASOD);Bridges;Arid Soil Research and Rehabilitation,1999