TY - JOUR AU - Corbo Esposito, Antonio AU - De Arcangelis, Riccardo TI - A characterization of families of function sets described by constraints on the gradient JO - Annales de l'I.H.P. Analyse non linéaire PY - 1994 SP - 553 EP - 609 VL - 11 IS - 5 PB - Gauthier-Villars UR - http://www.numdam.org/item/AIHPC_1994__11_5_553_0/ LA - en ID - AIHPC_1994__11_5_553_0 ER -