@article{PismaZhETF.21.595,
    title = {Excitation of high-lying state of the sodium atom by dye-laser radiation and their autoionization in an electric field},
    author = {Ambartsumyan, R. V. and Bekov, G. I. and Letokhov, V. S. and Mishin, V. I.},
    journal = {Письма в ЖЭТФ},
    volume = {21},
    issue = {10},
    pages = {595},
    year = {1975},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22497.shtml},
}