@article {DAgostino1992IJC,
	title = {{Supplementing solar radiation network data by co-Kriging with satellite images}},
	journal = {International Journal of Climatology},
	volume = {12},
	number = {7},
	year = {1992},
	pages = {749-761},
	author = {{D{\textquoteright}Agostino}, V. and Zelenka, A.}
}