@article{PismaZhETF.21.135,
    title = {Collective levels in heavy atoms},
    author = {Gadiyak, G. V. and Kirzhnits, D. A. and Lozovik, Yu. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {21},
    issue = {2},
    pages = {135},
    year = {1975},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22268.shtml},
}