@article{EJDE_2005__2005__a71,
     author = {Bounkhel,  Messaoud and Haddad,  Tahar},
     title = {Existence of viable solutions for nonconvex differential inclusions},
     journal = {Electronic journal of differential equations},
     year = {2005},
     volume = {2005},
     zbl = {1075.34053},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a71/}
}