%0 Journal Article %A Duff, G. F. D. %A Ross, R. A. %T Indefinite Green's Functions and Elementary Solutions %J Canadian mathematical bulletin %D 1963 %P 71-103 %V 6 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1963-011-7/ %R 10.4153/CMB-1963-011-7 %F 10_4153_CMB_1963_011_7