@article{EJDE_2009__2009__a188, author = {Ursescu, Corneliu}, title = {Second order tangency conditions and differential inclusions: a counterexample and a remedy}, journal = {Electronic Journal of Differential Equations}, publisher = {mathdoc}, volume = {2009}, year = {2009}, language = {en}, url = {http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a188/} }