@article{urn:eudml:doc:41596, title = {An inverse problem for a general annular drum with positive smooth functions in the Robin boundary conditions.}, journal = {Collectanea Mathematica}, volume = {51}, year = {2000}, pages = {261-275}, zbl = {0972.35191}, mrnumber = {MR1814329}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:41596} }
Zayed, E. M. E. An inverse problem for a general annular drum with positive smooth functions in the Robin boundary conditions.. Collectanea Mathematica, Tome 51 (2000) pp. 261-275. http://gdmltest.u-ga.fr/item/urn:eudml:doc:41596/