@article{1077310581,
author = {Beale, J. Thomas},
title = {Purely imaginary scattering frequencies for exterior domains},
journal = {Duke Math. J.},
volume = {41},
number = {1},
year = {1974},
pages = { 607-637},
language = {en},
url = {http://dml.mathdoc.fr/item/1077310581}
}
Beale, J. Thomas. Purely imaginary scattering frequencies for exterior domains. Duke Math. J., Tome 41 (1974) no. 1, pp. 607-637. http://gdmltest.u-ga.fr/item/1077310581/