@article{1183494169,
author = {Grove, V. G.},
title = {On canonical forms of differential
equations},
journal = {Bull. Amer. Math. Soc.},
volume = {36},
number = {11},
year = {1930},
pages = { 582-586},
language = {en},
url = {http://dml.mathdoc.fr/item/1183494169}
}
Grove, V. G. On canonical forms of differential equations. Bull. Amer. Math. Soc., Tome 36 (1930) no. 11, pp. 582-586. http://gdmltest.u-ga.fr/item/1183494169/