@article{PismaZhETF.15.237,
    title = {Trapping of Parametrically Amplified Light Waves in a KDP Crystal},
    author = {Belyaev, Yu. N. and Freidman, G. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {15},
    issue = {5},
    pages = {237},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26537.shtml},
}