@article{PismaZhETF.62.940,
    title = {On the key generation for N users in quantum cryptography},
    author = {Molotkov, S. N. and Nazin, S. S.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {62},
    issue = {12},
    pages = {940},
    year = {1995},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_14517.shtml},
}