%0 Journal Article %A Wiesław Cupała %T On the essential spectrum and eigenvalue asymptotics of certain Schrödinger operators %J Studia Mathematica %D 1990 %P 195-202 %V 96 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-96-3-195-202/ %R 10.4064/sm-96-3-195-202 %G en %F 10_4064_sm_96_3_195_202