@article{EJDE_2009__2009__a70,
     author = {Zaidi, Atiya H.},
     title = {Existence of solutions and convergence results for dynamic initial value problems using lower and upper solutions},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2009},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a70/}
}