@article{PismaZhETF.2.230,
    title = {Symmetry of the Hydrogen Atom},
    author = {Malkin, I. A. and Man'ko, V. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {2},
    issue = {5},
    pages = {230},
    year = {1965},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24507.shtml},
}