@article{PismaZhETF.32.175,
    title = {Six-and eight-photon resonance processes in sodium vapor},
    author = {Drabovich, K. N. and Kovrigin, A. I. and Pershin, S. M. and Sinyavskii, N. M. and Surovegin, A. L.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {32},
    issue = {2},
    pages = {175},
    year = {1980},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21663.shtml},
}