%0 Journal Article %A Brauer, Fred %T The Solution of Non-Homogeneous Systems of Differential Equations by Undetermined Coefficients %J Canadian mathematical bulletin %D 1966 %P 481-487 %V 9 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1966-059-7/ %R 10.4153/CMB-1966-059-7 %F 10_4153_CMB_1966_059_7