@article{EJDE_2003__2003__a20,
     author = {Grammatikopoulos, Myron K. and Kelevedjiev, Petio S.},
     title = {Minimal and maximal solutions for two-point boundary-value problems},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2003},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2003__2003__a20/}
}