%0 Journal Article %A Al-Salam, Nadhla A. %A Al-Salam, Waleed A. %T On a Functional Equation %J Canadian mathematical bulletin %D 1979 %P 235-237 %V 22 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1979-030-x/ %R 10.4153/CMB-1979-030-x %F 10_4153_CMB_1979_030_x