@article{02237560,
title = {Transformation operators for the perturbed Hill difference equation and one of their applications.},
journal = {Sibirskij Matematicheskij Zhurnal},
volume = {44},
year = {2003},
pages = {926-937},
zbl = {1081.39021},
language = {en},
url = {http://dml.mathdoc.fr/item/02237560}
}
Khanmamedov, Ag.Kh. Transformation operators for the perturbed Hill difference equation and one of their applications.. Sibirskij Matematicheskij Zhurnal, Tome 44 (2003) pp. 926-937. http://gdmltest.u-ga.fr/item/02237560/