@article{bwmeta1.element.desklight-349bb65d-d422-4458-a53f-003773974e3b,
author = {S. Czerwik},
title = {On sign-preserving solutions of a linear functional equation},
journal = {Annales Polonici Mathematici},
volume = {20},
year = {1968},
pages = {73-79},
zbl = {0152.35203},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-349bb65d-d422-4458-a53f-003773974e3b}
}
S. Czerwik. On sign-preserving solutions of a linear functional equation. Annales Polonici Mathematici, Tome 20 (1968) pp. 73-79. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-349bb65d-d422-4458-a53f-003773974e3b/