@article{PismaZhETF.26.373,
    title = {Rate of particle production in gravitational fields},
    author = {Zel'dovich, Ya. B. and Starobinskii, A. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {26},
    issue = {5},
    pages = {373},
    year = {1977},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_20902.shtml},
}