@article{05237439,
title = {On lower and upper solutions without ordering on time scales.},
journal = {Advances in Difference Equations [electronic only]},
volume = {2006},
year = {2006},
doi = {10.1155/ADE/2006/73860},
zbl = {1139.39035},
language = {en},
url = {http://dml.mathdoc.fr/item/05237439}
}
Stehlík, Petr. On lower and upper solutions without ordering on time scales.. Advances in Difference Equations [electronic only], Tome 2006 (2006) . doi : 10.1155/ADE/2006/73860. http://gdmltest.u-ga.fr/item/05237439/