@article{05134605, title = {Existence of positive solutions of PBVPs for first-order difference equations.}, journal = {Discrete Dynamics in Nature and Society}, volume = {2006}, year = {2006}, doi = {10.1155/DDNS/2006/65798}, zbl = {1118.39005}, language = {en}, url = {http://dml.mathdoc.fr/item/05134605} }
Zhou, Yinggao. Existence of positive solutions of PBVPs for first-order difference equations.. Discrete Dynamics in Nature and Society, Tome 2006 (2006) . doi : 10.1155/DDNS/2006/65798. http://gdmltest.u-ga.fr/item/05134605/