@article{GDZPPN002355302,
title = {A generalization of the Phragm\'en-Lindel\"of principle for elliptic differential equations.},
journal = {Mathematica Scandinavica},
volume = {43},
year = {1978},
pages = {259-274},
zbl = {0452.31001},
url = {http://dml.mathdoc.fr/item/GDZPPN002355302}
}
Wanby, Göran. A generalization of the Phragmén-Lindelöf principle for elliptic differential equations.. Mathematica Scandinavica, Tome 43 (1978) pp. 259-274. http://gdmltest.u-ga.fr/item/GDZPPN002355302/