@article{EJDE_2009__2009__a88,
     author = {Ursescu,  Corneliu},
     title = {Second order tangency conditions and differential inclusions: a counterexample and a remedy},
     journal = {Electronic journal of differential equations},
     year = {2009},
     volume = {2009},
     zbl = {1177.34018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a88/}
}