@article {MR2318705, AUTHOR = {B{\'e}cache, E. and Rodr{\'{\i}}guez, J. and Tsogka, C.}, TITLE = {A fictitious domain method with mixed finite elements for elastodynamics}, JOURNAL = {SIAM J. Sci. Comput.}, FJOURNAL = {SIAM Journal on Scientific Computing}, VOLUME = {29}, YEAR = {2007}, NUMBER = {3}, PAGES = {1244--1267 (electronic)}, ISSN = {1064-8275}, MRCLASS = {65M60 (65M12 74J20 74S05)}, MRNUMBER = {2318705 (2008f:65171)}, MRREVIEWER = {Akhtar A. Khan}, DOI = {10.1137/060655821}, URL = {http://dx.doi.org/10.1137/060655821}, }