@techreport{amara:inria-00421584, TITLE = {{A Modified Discontinuous Galerkin Method for Solving Helmholtz Problems}}, AUTHOR = {Amara, Mohamed and Calandra, Henri and Djellouli, Rabia and Grigoroscuta-Strugaru, Magdalena}, URL = {https://inria.hal.science/inria-00421584}, TYPE = {Research Report}, NUMBER = {RR-7050}, PAGES = {30}, INSTITUTION = {{INRIA}}, YEAR = {2009}, KEYWORDS = {Plane waves ; Lagrange multipliers ; Waveguide problems ; Helmholtz equation ; Discontinuous Galerkin ; Positive semi-definite matrix ; Inf-sup condition}, PDF = {https://inria.hal.science/inria-00421584v4/file/RR-7050.pdf}, HAL_ID = {inria-00421584}, HAL_VERSION = {v4}, }