@article{PismaZhETF.34.278,
    title = {Approximate motion intergal for a hydrogen atom in a magnetic field},
    author = {Solov'ev, E. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {34},
    issue = {5},
    pages = {278},
    year = {1981},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23203.shtml},
}