@incollection{JEDP_1984____A3_0,
     author = {Melrose, Richard B.},
     title = {Polynomial bound on the distribution of poles in scattering by an obstacle},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {3},
     pages = {1--8},
     publisher = {Ecole polytechnique},
     year = {1984},
     zbl = {0621.35073},
     language = {en},
     url = {http://archive.numdam.org/item/JEDP_1984____A3_0/}
}