@article{DE_1976_12_5_a2,
     author = {L. B. Zelenko},
     title = {The spectrum of a {Schr\"odinger} equation with a complex pseudoperiodic {potential.~I}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {806--814},
     publisher = {mathdoc},
     volume = {12},
     number = {5},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_5_a2/}
}