@article{10_4153_CMB_1966_059_7,
     author = {Brauer, Fred},
     title = {The {Solution} of {Non-Homogeneous} {Systems} of {Differential} {Equations} by {Undetermined} {Coefficients}},
     journal = {Canadian mathematical bulletin},
     pages = {481--487},
     year = {1966},
     volume = {9},
     number = {4},
     doi = {10.4153/CMB-1966-059-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1966-059-7/}
}