%0 Journal Article %A Long, Calvin T. %T On a Problem in Partial Difference Equations %J Canadian mathematical bulletin %D 1970 %P 333-335 %V 13 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-064-9/ %R 10.4153/CMB-1970-064-9 %F 10_4153_CMB_1970_064_9