@article{JCA_2008_15_4_JCA_2008_15_4_a8,
     author = {Z. Bartosiewicz and E. Girejko},
     title = {On {Generalized} {Differentials,} {Viability} and {Invariance} of {Differential} {Inclusions}},
     journal = {Journal of convex analysis},
     pages = {819--83},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {2008},
     url = {http://geodesic.mathdoc.fr/item/JCA_2008_15_4_JCA_2008_15_4_a8/}
}