@article{NUMA_1991__59_8_133547,
     author = {G. Vanden Berghe and H. De Meyer},
     title = {Accurate computation of higher {Sturm-Liouville} eigenvalues.},
     journal = {Numerische Mathematik},
     pages = {243--254},
     publisher = {mathdoc},
     volume = {59},
     number = {8},
     year = {1991},
     zbl = {0716.65079},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1991__59_8_133547/}
}