@article{IIMI_2004_1_a4,
     author = {N. I. Pletnikova},
     title = {On the one-dimensional {Schr\"odinger} equation with a perturbed non-local steplike potential},
     journal = {Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta},
     pages = {95--108},
     year = {2004},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIMI_2004_1_a4/}
}