@article{1103043229,
author = {Friedman, Avner},
title = {On two theorems of Phragm\'en-Lindel\"of for linear elliptic and parabolic differential equations of the second order.},
journal = {Pacific J. Math.},
volume = {7},
number = {4},
year = {1957},
pages = { 1563-1575},
language = {en},
url = {http://dml.mathdoc.fr/item/1103043229}
}
Friedman, Avner. On two theorems of Phragmén-Lindelöf for linear elliptic and parabolic differential equations of the second order.. Pacific J. Math., Tome 7 (1957) no. 4, pp. 1563-1575. http://gdmltest.u-ga.fr/item/1103043229/