%0 Journal Article %A Qi S. Zhang %T Gaussian Bounds for the Fundamental Solutions ... %J Manuscripta mathematica %D 1997 %P 381-390 %V 93 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1997__93_4_156307/ %F MM2_1997__93_4_156307