TY - JOUR AU - Fernández-Cara, E. TI - Null controllability of the semilinear heat equation JO - ESAIM: Control, Optimisation and Calculus of Variations PY - 1997 SP - 87 EP - 103 VL - 2 PB - EDP-Sciences UR - http://www.numdam.org/item/COCV_1997__2__87_0/ LA - en ID - COCV_1997__2__87_0 ER -