@article{PDML_1978__15_2_A1_0,
     author = {Gueugnon, Michel},
     title = {Perturbations singuli\`eres et noyaux de {Poisson}},
     journal = {Publications du D\'epartement de math\'ematiques (Lyon)},
     pages = {1--112},
     publisher = {Universit\'e Claude Bernard - Lyon 1},
     volume = {15},
     number = {2},
     year = {1978},
     mrnumber = {546134},
     zbl = {0417.35012},
     language = {fr},
     url = {http://www.numdam.org/item/PDML_1978__15_2_A1_0/}
}