@article{TSG_1986-1987__5__85_0,
     author = {Torki, Nabila},
     title = {Perturbations par champs magn\'etiques faibles sur $S^2$},
     journal = {S\'eminaire de th\'eorie spectrale et g\'eom\'etrie},
     pages = {85--97},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {5},
     year = {1986-1987},
     mrnumber = {1046245},
     zbl = {1149.58308},
     language = {fr},
     url = {http://www.numdam.org/item/TSG_1986-1987__5__85_0/}
}