@inproceedings{FrieseDeuflhardSchmidt1999, author = {T. Friese and Peter Deuflhard and Frank Schmidt}, title = {A Multigrid Method for the Complex Helmholtz Eigenvalue Problem}, booktitle = {Procs. Eleventh International Conference on Domain Decomposition Methods in Sciences and Engineering (DD11), UK}, editor = {Choi-Hong Lai and Petter E. Bj{\o}rstad and Mark Cross and Olof Widlund}, pages = {19 -- 26}, year = {1999}, }