@article{EJDE_2003__2003__a80,
     author = {Kaufmann,  Eric R.},
     title = {Positive solutions of a three-point boundary-value problem on a time scale},
     journal = {Electronic journal of differential equations},
     year = {2003},
     volume = {2003},
     zbl = {1047.34015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2003__2003__a80/}
}