@article{AIHPA_1992__56_3_235_0,
     author = {Mohamed, A. and Parisse, B.},
     title = {Approximation des valeurs propres de certaines perturbations singuli\`eres et application \`a l'op\'erateur de {Dirac}},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {235--277},
     publisher = {Gauthier-Villars},
     volume = {56},
     number = {3},
     year = {1992},
     mrnumber = {1160851},
     zbl = {0755.35106},
     language = {fr},
     url = {http://archive.numdam.org/item/AIHPA_1992__56_3_235_0/}
}