@article{PismaZhETF.32.88,
    title = {On neutron-antineutron oscillations},
    author = {Kazarnovskii, M. V. and Kuz'min, V. A. and Chetyrkin, K. G. and Shaposhnikov, M. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {32},
    issue = {1},
    pages = {88},
    year = {1980},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21640.shtml},
}