@article{05038330,
title = {Construction of upper and lower solutions for singular discrete initial and boundary value problems via inequality theory.},
journal = {Advances in Difference Equations [electronic only]},
volume = {2005},
year = {2005},
pages = {205-214},
doi = {10.1155/ADE.2005.205},
zbl = {1103.39021},
language = {en},
url = {http://dml.mathdoc.fr/item/05038330}
}
Lü, Haishen; O'Regan, Donal. Construction of upper and lower solutions for singular discrete initial and boundary value problems via inequality theory.. Advances in Difference Equations [electronic only], Tome 2005 (2005) pp. 205-214. doi : 10.1155/ADE.2005.205. http://gdmltest.u-ga.fr/item/05038330/