@article{05555903, title = {On the spectrum of a discrete non-Hermitian quantum system.}, journal = {SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]}, volume = {5}, year = {2009}, doi = {10.3842/SIGMA.2009.007}, zbl = {1163.39006}, language = {en}, url = {http://dml.mathdoc.fr/item/05555903} }
Ergun, Ebru. On the spectrum of a discrete non-Hermitian quantum system.. SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only], Tome 5 (2009) . doi : 10.3842/SIGMA.2009.007. http://gdmltest.u-ga.fr/item/05555903/