TY - JOUR AU - Mouez Dimassi AU - Maher Mnif TI - Lower bounds for the counting function of resonances for a perturbation of a periodic Schrödinger operator by decreasing potential JO - Comptes Rendus. Mathématique PY - 2002 SP - 1013 EP - 1016 VL - 335 IS - 12 PB - Elsevier DO - 10.1016/S1631-073X(02)02600-6 LA - en ID - CRMATH_2002__335_12_1013_0 ER -