@article{PismaZhETF.16.365,
    title = {Parametric Generation of Ultrashort Pulses of Tunable-frequency Radiation},
    author = {Burneika, K. P. and Ignatavicus, M. V. and Kabelka, V. I. and Piskarskas, A. S. and Stabinis, A. Yu.},
    journal = {Письма в ЖЭТФ},
    volume = {16},
    issue = {7},
    pages = {365},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26904.shtml},
}