@article{PismaZhETF.51.615,
    title = {New adiabatic invariants in the problem of two H atoms which are far apart},
    author = {Belov, A. A. and Lozovik, Yu. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {51},
    issue = {12},
    pages = {615},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17697.shtml},
}