@article{05629328,
title = {Necessary and sufficient conditions for the existence of positive solution for singular boundary value problems on time scales.},
journal = {Advances in Difference Equations [electronic only]},
volume = {2009},
year = {2009},
doi = {10.1155/2009/737461},
zbl = {1182.34112},
language = {en},
url = {http://dml.mathdoc.fr/item/05629328}
}
Feng, Meiqiang; Zhang, Xuemei; Li, Xianggui; Ge, Weigao. Necessary and sufficient conditions for the existence of positive solution for singular boundary value problems on time scales.. Advances in Difference Equations [electronic only], Tome 2009 (2009) . doi : 10.1155/2009/737461. http://gdmltest.u-ga.fr/item/05629328/