@article {MR2512501, AUTHOR = {B{\'e}cache, Eliane and Rodr{\'{\i}}guez, Jeronimo and Tsogka, Chrysoula}, TITLE = {Convergence results of the fictitious domain method for a mixed formulation of the wave equation with a {N}eumann boundary condition}, JOURNAL = {M2AN Math. Model. Numer. Anal.}, FJOURNAL = {M2AN. Mathematical Modelling and Numerical Analysis}, VOLUME = {43}, YEAR = {2009}, NUMBER = {2}, PAGES = {377--398}, ISSN = {0764-583X}, MRCLASS = {65M60 (74S05)}, MRNUMBER = {2512501 (2010d:65240)}, DOI = {10.1051/m2an:2008047}, URL = {http://dx.doi.org/10.1051/m2an:2008047}, }