@article{PismaZhETF.12.478,
    title = {Spectrum of the Field of Moving Focal Regions},
    author = {Lugovoi, V. N. and Prokhorov, A. M.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {12},
    issue = {10},
    pages = {478},
    year = {1970},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26363.shtml},
}