@article{ZVMMF_2007_47_9_a10,
     author = {M. D. Kovalev},
     title = {The number of energy levels of a~particle in an {MQW} structure},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1557--1575},
     publisher = {mathdoc},
     volume = {47},
     number = {9},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2007_47_9_a10/}
}