@article{bwmeta1.element.desklight-5b3d43a5-a17e-46e0-8628-aab6968ce636,
author = {Tadeusz Rumak},
title = {Estimation of functions by means of the first order partial differential inequalities},
journal = {Annales Polonici Mathematici},
volume = {26},
year = {1972},
pages = {61-71},
zbl = {0235.26011},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-5b3d43a5-a17e-46e0-8628-aab6968ce636}
}
Tadeusz Rumak. Estimation of functions by means of the first order partial differential inequalities. Annales Polonici Mathematici, Tome 26 (1972) pp. 61-71. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-5b3d43a5-a17e-46e0-8628-aab6968ce636/