@article{GDZPPN001177656, title = {Discretization of Multiparameter Eigenvalue Problems}, journal = {Numerische Mathematik}, volume = {39}, year = {1982}, pages = {319-328}, zbl = {0487.65049}, url = {http://dml.mathdoc.fr/item/GDZPPN001177656} }
Müller, R.E. Discretization of Multiparameter Eigenvalue Problems. Numerische Mathematik, Tome 39 (1982) pp. 319-328. http://gdmltest.u-ga.fr/item/GDZPPN001177656/