@article{PismaZhETF.48.513,
    title = {Could particles with energies above 4 x $10^{17}$ eV be neutral?},
    author = {Glushkov, A. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {48},
    issue = {10},
    pages = {513},
    year = {1988},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_16781.shtml},
}