@article{DE_2000_36_9_a0,
     author = {M. V. Korovina},
     title = {On the {Schr\"odinger} equation with potential concentrated on a surface},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1155--1159},
     publisher = {mathdoc},
     volume = {36},
     number = {9},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2000_36_9_a0/}
}