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@article{JRAM_1976__280_151673, author = {Albert Schneider}, title = {On spectral theory for singular {S-hermetian} difference systems.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {77--90}, publisher = {mathdoc}, volume = {280}, year = {1976}, zbl = {0318.39002}, url = {https://geodesic-test.mathdoc.fr/item/JRAM_1976__280_151673/} }
Albert Schneider. On spectral theory for singular S-hermetian difference systems.. Journal für die reine und angewandte Mathematik, Tome 280 (1976), pp. 77-90. https://geodesic-test.mathdoc.fr/item/JRAM_1976__280_151673/