@article{1102996002, author = {Kreimer, H. F.}, title = {On an extension of the Picard-Vessiot theory.}, journal = {Pacific J. Math.}, volume = {15}, number = {4}, year = {1965}, pages = { 191-205}, language = {en}, url = {http://dml.mathdoc.fr/item/1102996002} }
Kreimer, H. F. On an extension of the Picard-Vessiot theory.. Pacific J. Math., Tome 15 (1965) no. 4, pp. 191-205. http://gdmltest.u-ga.fr/item/1102996002/