@article{05038323, title = {Power series techniques for a special Schr\"odinger operator and related difference equations.}, journal = {Advances in Difference Equations [electronic only]}, volume = {2005}, year = {2005}, pages = {109-118}, doi = {10.1155/ADE.2005.109}, zbl = {1115.34002}, language = {en}, url = {http://dml.mathdoc.fr/item/05038323} }
Simon, Moritz; Ruffing, Andreas. Power series techniques for a special Schrödinger operator and related difference equations.. Advances in Difference Equations [electronic only], Tome 2005 (2005) pp. 109-118. doi : 10.1155/ADE.2005.109. http://gdmltest.u-ga.fr/item/05038323/