@article{GDZPPN002191512,
title = {On spectral theory for singular S-hermetian difference systems.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {281},
year = {1976},
pages = {77-90},
zbl = {0318.39002},
url = {http://dml.mathdoc.fr/item/GDZPPN002191512}
}
Schneider, Albert. On spectral theory for singular S-hermetian difference systems.. Journal für die reine und angewandte Mathematik, Tome 281 (1976) pp. 77-90. http://gdmltest.u-ga.fr/item/GDZPPN002191512/