@article{1077467490,
author = {Friedman, Avner},
title = {Classes of solutions of linear systems of partial differential
equations of parabolic type},
journal = {Duke Math. J.},
volume = {24},
number = {1},
year = {1957},
pages = { 433-442},
language = {en},
url = {http://dml.mathdoc.fr/item/1077467490}
}
Friedman, Avner. Classes of solutions of linear systems of partial differential
equations of parabolic type. Duke Math. J., Tome 24 (1957) no. 1, pp. 433-442. http://gdmltest.u-ga.fr/item/1077467490/