@article{EXMA_2003__12_2_51262,
     author = {Asch, Mark and Lebeau, Gilles},
     title = {The spectrum of the damped wave operator for a bounded domain in .},
     journal = {Experimental mathematics},
     pages = {227--241},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {2003},
     zbl = {1061.35064},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMA_2003__12_2_51262/}
}