TY - JOUR AU - Ursescu, Corneliu TI - Second order tangency conditions and differential inclusions: a counterexample and a remedy JO - Electronic Journal of Differential Equations PY - 2009 VL - 2009 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a188/ LA - en ID - EJDE_2009__2009__a188 ER -