@article{1102976976,
author = {Swanson, C. A.},
title = {Comparison theorems for elliptic differential systems.},
journal = {Pacific J. Math.},
volume = {35},
number = {3},
year = {1970},
pages = { 445-450},
language = {en},
url = {http://dml.mathdoc.fr/item/1102976976}
}
Swanson, C. A. Comparison theorems for elliptic differential systems.. Pacific J. Math., Tome 35 (1970) no. 3, pp. 445-450. http://gdmltest.u-ga.fr/item/1102976976/