@article{bwmeta1.element.desklight-414d4d60-7606-4041-bd01-9a34ed3635d1,
author = {T. Sty\'s},
title = {The maximum principle for the systems of the difference equations},
journal = {Annales Polonici Mathematici},
volume = {20},
year = {1968},
pages = {223-230},
zbl = {0188.47002},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-414d4d60-7606-4041-bd01-9a34ed3635d1}
}
T. Styś. The maximum principle for the systems of the difference equations. Annales Polonici Mathematici, Tome 20 (1968) pp. 223-230. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-414d4d60-7606-4041-bd01-9a34ed3635d1/