@article{02163626,
title = {On the existence of positive solutions for periodic parabolic sublinear problems.},
journal = {Abstract and Applied Analysis},
volume = {2003},
year = {2003},
pages = {975-984},
doi = {10.1155/S1085337503309029},
zbl = {1133.35380},
language = {en},
url = {http://dml.mathdoc.fr/item/02163626}
}
Godoy, T.; Kaufmann, U. On the existence of positive solutions for periodic parabolic sublinear problems.. Abstract and Applied Analysis, Tome 2003 (2003) pp. 975-984. doi : 10.1155/S1085337503309029. http://gdmltest.u-ga.fr/item/02163626/