@article{PismaZhETF.11.585,
    title = {Ruby Laser with Optical Delay Line Inside the Resonator},
    author = {Kornienko, L. S. and Kravtsov, N. V. and Lariontsev, E. G. and Naumkin, N. I.},
    journal = {Письма в ЖЭТФ},
    volume = {11},
    issue = {12},
    pages = {585},
    year = {1970},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26202.shtml},
}