@article{1138843144, author = {Saito, Toshiya}, title = {Differential equations with invariant Pfaffian forms}, journal = {Kodai Math. Sem. Rep.}, volume = {3}, number = {1-2}, year = {1951}, pages = { 103-117}, language = {en}, url = {http://dml.mathdoc.fr/item/1138843144} }
Saito, Toshiya. Differential equations with invariant Pfaffian forms. Kodai Math. Sem. Rep., Tome 3 (1951) no. 1-2, pp. 103-117. http://gdmltest.u-ga.fr/item/1138843144/