@article{PismaZhETF.28.453,
    title = {Stimulated emission in multiphoton excitation of an atom above the ionization limit},
    author = {Korolev, F. A. and Znamenskii, N. V. and Odintsov, V. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {28},
    issue = {7},
    pages = {453},
    year = {1978},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24187.shtml},
}