%0 Journal Article %A P. Besala %T On the existence of a fundamental solution for a parabolic differential equation with unbounded coefficients %J Annales Polonici Mathematici %D 1974 %P 403-409 %V 29 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-29-4-403-409/ %R 10.4064/ap-29-4-403-409 %G en %F 10_4064_ap_29_4_403_409