@article{PORMA_2006__63_1_52968,
     author = {Morchadi, Radouan and Sajid, Sa{\"\i}d},
     title = {A viability result for a first-order differential inclusion.},
     journal = {Portugaliae mathematica},
     pages = {11--21},
     publisher = {mathdoc},
     volume = {63},
     number = {1},
     year = {2006},
     zbl = {1104.49006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_2006__63_1_52968/}
}