@article{10_1007_s10492_014_0037_7,
     author = {Stammberger, Markus and Voss, Heinrich},
     title = {Variational characterization of eigenvalues of a non-symmetric eigenvalue problem governing elastoacoustic vibrations},
     journal = {Applications of Mathematics},
     pages = {1--13},
     publisher = {mathdoc},
     volume = {59},
     number = {1},
     year = {2014},
     doi = {10.1007/s10492-014-0037-7},
     mrnumber = {3164572},
     zbl = {06346368},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10492-014-0037-7/}
}