@article{M2AN_2009__43_2_377_0,
     author = {B\'ecache, 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 {Neumann} boundary condition},
     journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
     pages = {377--398},
     publisher = {EDP-Sciences},
     volume = {43},
     number = {2},
     year = {2009},
     doi = {10.1051/m2an:2008047},
     mrnumber = {2512501},
     zbl = {1161.65071},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/m2an:2008047/}
}