@article{DE_1982_18_11_a15,
     author = {A. G. Alenizyn},
     title = {Splitting of the spectrum generated by a potential barrier in problems with a symmetric potential},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1971--1975},
     publisher = {mathdoc},
     volume = {18},
     number = {11},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_11_a15/}
}