@article{JEDP_1990____A5_0, author = {Petkov, Vesselin M.}, title = {Phase de diffusion pour des perturbations captives}, journal = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, eid = {5}, publisher = {Ecole polytechnique}, year = {1990}, zbl = {0718.35007}, mrnumber = {92e:35121}, language = {fr}, url = {http://archive.numdam.org/item/JEDP_1990____A5_0/} }