%0 Journal Article %A A. White %T Singularities of harmonic functions of three variables generated by Whittaker-Bergman operators %J Annales Polonici Mathematici %D 1961 %P 81-100 %V 10 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-10-1-81-100/ %R 10.4064/ap-10-1-81-100 %G en %F 10_4064_ap_10_1_81_100