@conference {12917,
	title = {A new approach in the use of GIS on the estimation of values using grid models to describe real nature conditions.},
	booktitle = {2nd International congress of {\textquoteleft}Satelite applications and environment{\textquoteright}},
	year = {2000},
	author = {Vaiopoulos, D. and Vassilopoulos, A. and Evelpidou, N.}
}
