@article{PismaZhETF.75.271,
    title = {Двухфотонный спектрон},
    author = {Чехова, М. В.},
    journal = {Письма в ЖЭТФ},
    volume = {75},
    issue = {5},
    pages = {271},
    year = {2002},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_15663.shtml},
}