@article{SEDP_1990-1991____A15_0,
     author = {Petkov, V. M.},
     title = {P\^oles de la matrice de diffusion pour des perturbations captives},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:15},
     pages = {1--13},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1990-1991},
     mrnumber = {1131588},
     zbl = {0739.35060},
     language = {fr},
     url = {http://www.numdam.org/item/SEDP_1990-1991____A15_0/}
}