@article{05791642, title = {Upper and lower solutions method for a class of singular fractional boundary value problems with }, journal = {Abstract and Applied Analysis}, volume = {2010}, year = {2010}, doi = {10.1155/2010/971824}, zbl = {1209.34005}, language = {en}, url = {http://dml.mathdoc.fr/item/05791642} }
Wang, Jinhua; Xiang, Hongjun. Upper and lower solutions method for a class of singular fractional boundary value problems with . Abstract and Applied Analysis, Tome 2010 (2010) . doi : 10.1155/2010/971824. http://gdmltest.u-ga.fr/item/05791642/