@article{CRMATH_2002__335_12_1013_0,
     author = {Mouez Dimassi and Maher Mnif},
     title = {Lower bounds for the counting function of resonances for a perturbation of a periodic {Schr\"odinger} operator by decreasing potential},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {1013--1016},
     publisher = {Elsevier},
     volume = {335},
     number = {12},
     year = {2002},
     doi = {10.1016/S1631-073X(02)02600-6},
     language = {en},
}