@article{DAN_1993_328_6_a1,
     author = {V. N. Kolokol'tsev},
     title = {On the asymptotics of low eigenvalues and eigenfunctions of the {Schr\"odinger} operator},
     journal = {Doklady Akademii Nauk},
     pages = {649--653},
     publisher = {mathdoc},
     volume = {328},
     number = {6},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1993_328_6_a1/}
}