@article{PismaZhETF.12.50,
    title = {Production of Two Electron-positron Pairs in Collisions of Fast Particles},
    author = {Serbo, V. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {12},
    issue = {1},
    pages = {50},
    year = {1970},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26226.shtml},
}