@article{PismaZhETF.4.393,
    title = {Parametric Resonance in an Effective Field},
    author = {Novikov, L. N. and Pokazan'ev, V. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {4},
    issue = {10},
    pages = {393},
    year = {1966},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25047.shtml},
}