@article{PismaZhETF.61.233,
    title = {Cosmic rays with energies above 3 x $10^{20}$ eV},
    author = {Dedenko, L. G. and Zatsepin, G. T. and Roganova, T. M. and Fedorova, G. F.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {61},
    issue = {4},
    pages = {233},
    year = {1995},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18132.shtml},
}