@article{bwmeta1.element.bwnjournal-article-apmv7i3p255bwm,
author = {Pli\'s, A.},
title = {On the uniqueness of the non-negative solution of the homogeneous mixed problem for a system of partial differential equations},
journal = {Annales Polonici Mathematici},
volume = {8},
year = {1960},
pages = {255-258},
zbl = {0093.29302},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-apmv7i3p255bwm}
}
Pliś, A. On the uniqueness of the non-negative solution of the homogeneous mixed problem for a system of partial differential equations. Annales Polonici Mathematici, Tome 8 (1960) pp. 255-258. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-apmv7i3p255bwm/