@article{PismaZhETF.76.291,
    title = {Trans-Planckian particle creation in cosmology and ultra-high energy cosmic rays},
    author = {Starobinsky, A. A. and Tkachev, I. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {76},
    issue = {5},
    pages = {291},
    year = {2002},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_9413.shtml},
}