@article{PismaZhETF.59.91,
    title = {Observation of two-photon potential scattering of Rydberg sodium atoms by a microwave field},
    author = {Beterov, I. M. and Ryabtsev, I. I.},
    journal = {Письма в ЖЭТФ},
    volume = {59},
    issue = {2},
    pages = {91},
    year = {1994},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19572.shtml},
}