@article{PismaZhETF.39.493,
    title = {Test of the equality of the particle and antiparticle masses in neutron-antineutron oscillations},
    author = {Abov, Yu. G. and Dzheparov, F. S. and Okun', L. B.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {39},
    issue = {10},
    pages = {493},
    year = {1984},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19685.shtml},
}