SILLEOS, Nikolaos, Ines CHERIF,
Jaromír KOLEJKA, Georgios SILLEOS and Fotis KATSOGIANNOS. Prediction of desertification risk using recommended European methodology and GIS techniques.
Riscuri si catastrofe. Cluj-Napoca: Casa cartii de stiinta, 2007, vol. 4, No 4, p. 11-31. ISSN 1584-5273.