@article{SEDP_1987-1988____A20_0,
     author = {Petkov, V.},
     title = {Les probl\`emes inverses de diffusion pour les perturbations d\'ependant du temps},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:20},
     pages = {1--11},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1987-1988},
     mrnumber = {1018192},
     zbl = {0682.35103},
     language = {fr},
     url = {http://www.numdam.org/item/SEDP_1987-1988____A20_0/}
}