@article{10_1017_fms_2015_14,
     author = {XIN LIANG and REN-CANG LI},
     title = {THE {HYPERBOLIC} {QUADRATIC} {EIGENVALUE} {PROBLEM}},
     journal = {Forum of Mathematics, Sigma},
     publisher = {mathdoc},
     volume = {3},
     year = {2015},
     doi = {10.1017/fms.2015.14},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/fms.2015.14/}
}