%0 Journal Article %A D. Djurović %T Solar Activity and Relationships Between Astronomy and the Geosciences %J Publications of the Department of Astronomy %D 1990 %P 21 %V 18 %I mathdoc %U http://geodesic.mathdoc.fr/item/PDA_1990_18_a1/ %G en %F PDA_1990_18_a1