%0 Journal Article %A Tran, Dien Hien %T The Dirichlet problem in the dispersion of gas exhalations over a wet hilly surface %J Commentationes Mathematicae Universitatis Carolinae %D 1984 %P 459-471 %V 25 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1984__25_3_a5/ %G en %F CMUC_1984__25_3_a5