@article{EJDE_2012__2012__a22,
     author = {Aitalioubrahim,  Myelkebir and Sajid,  Said},
     title = {Higher order viability problem in {Banach} spaces},
     journal = {Electronic journal of differential equations},
     year = {2012},
     volume = {2012},
     zbl = {1243.34091},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2012__2012__a22/}
}