@article{10_4153_CMB_1972_027_6,
     author = {Roberts, Leslie G.},
     title = {Higher {Derivations} and the {Jordan} {Canonical} {Form} of the {Companion} {Matrix}},
     journal = {Canadian mathematical bulletin},
     pages = {143--144},
     year = {1972},
     volume = {15},
     number = {1},
     doi = {10.4153/CMB-1972-027-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1972-027-6/}
}