Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{NUMA_1975__24_132349, author = {R.D. Grigorieff}, title = {Diskrete {Approximation} von {Eigenwertproblemen.} {I.} {Qualitative} {Konvergenz.}}, journal = {Numerische Mathematik}, pages = {355--374}, publisher = {mathdoc}, volume = {24}, year = {1975}, zbl = {0391.65020}, url = {http://geodesic.mathdoc.fr/item/NUMA_1975__24_132349/} }
R.D. Grigorieff. Diskrete Approximation von Eigenwertproblemen. I. Qualitative Konvergenz.. Numerische Mathematik, Tome 24 (1975), pp. 355-374. http://geodesic.mathdoc.fr/item/NUMA_1975__24_132349/