@article{PismaZhETF.19.368,
    title = {Concerning the reproducibility of the frequency of  a laser stabilized against the transition frequency of the absorbing gas},
    author = {Gnatovskii, A. V. and Belenov, E. M. and Danileiko, M. V. and Nikitin, V. V. and Fedin, V. P. and Shpak, M. T.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {19},
    issue = {6},
    pages = {368},
    year = {1974},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27014.shtml},
}