@article{EJDE_2007__2007__a127,
     author = {Ma, Shuang-Hong and Sun, Jian-Ping and Wang, Da-Bin},
     title = {Existence of positive solutions for nonlinear dynamic systems with a parameter on a measure chain},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2007},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a127/}
}