@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/