@article{PismaZhETF.14.267,
    title = {Critical Charge in Collisions of Nuclei},
    author = {Popov, V. S. and Rozhdestvenskaya, T. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {14},
    issue = {4},
    pages = {267},
    year = {1971},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24606.shtml},
}