@article{PismaZhETF.26.14,
    title = {Double multiphpton ionization of strontium atom},
    author = {Aleksakhin, I. S. and Zapesochnyi, I. P. and Suran, V. V.},
    journal = {Письма в ЖЭТФ},
    volume = {26},
    issue = {1},
    pages = {14},
    year = {1977},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_20753.shtml},
}