@article{02236237,
title = {The integral equation methods for the perturbed Helmholtz eigenvalue problems.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {2005},
year = {2005},
pages = {1201-1220},
doi = {10.1155/IJMMS.2005.1201},
zbl = {1130.45001},
language = {en},
url = {http://dml.mathdoc.fr/item/02236237}
}
Khelifi, Abdessatar. The integral equation methods for the perturbed Helmholtz eigenvalue problems.. International Journal of Mathematics and Mathematical Sciences, Tome 2005 (2005) pp. 1201-1220. doi : 10.1155/IJMMS.2005.1201. http://gdmltest.u-ga.fr/item/02236237/