%0 Journal Article %A B. Szafirski %T On the Green's function for second order elliptic differential equations %J Colloquium Mathematicum %D 1967 %P 117-121 %V 16 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-16-1-117-121/ %R 10.4064/cm-16-1-117-121 %G en %F 10_4064_cm_16_1_117_121