%0 Journal Article %A A. L. Mironov %A V. L. Oleinik %T Limits of applicability of the tight binding approximation for complex-valued potential function %J Teoretičeskaâ i matematičeskaâ fizika %D 1997 %P 448-466 %V 112 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1997_112_3_a7/ %G ru %F TMF_1997_112_3_a7