@article{02095719,
title = {Absolute continuity of the spectrum of a Schr\"odinger operator with a potential which is periodic in some directions and decays in others.},
journal = {Documenta Mathematica},
volume = {9},
year = {2004},
pages = {107-121},
zbl = {1081.35016},
language = {en},
url = {http://dml.mathdoc.fr/item/02095719}
}
Filonov, N.; Klopp, F. Absolute continuity of the spectrum of a Schrödinger operator with a potential which is periodic in some directions and decays in others.. Documenta Mathematica, Tome 9 (2004) pp. 107-121. http://gdmltest.u-ga.fr/item/02095719/