@article{04181947,
title = {Hearing the shape of membranes: Further results.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {13},
year = {1990},
pages = {591-598},
doi = {10.1155/S0161171290000825},
zbl = {0717.35093},
language = {en},
url = {http://dml.mathdoc.fr/item/04181947}
}
Zayed, E.M.E. Hearing the shape of membranes: Further results.. International Journal of Mathematics and Mathematical Sciences, Tome 13 (1990) pp. 591-598. doi : 10.1155/S0161171290000825. http://gdmltest.u-ga.fr/item/04181947/