@article{PismaZhETF.15.574,
    title = {Bound States of Electron, Hole, and Phonon in a Strong Magnetic Field},
    author = {Levinson, I. B.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {15},
    issue = {9},
    pages = {574},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26662.shtml},
}