@article{PismaZhETF.11.516,
    title = {Gasdynamic $CO_2$ Laser with Escape of the Shock-tube Heated Working Mixture through a Slit},
    author = {Dronov, A. P. and D'yakov, A. S. and Kudryavtsev, E. M. and Sobolev, N. N.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {11},
    issue = {11},
    pages = {516},
    year = {1970},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26182.shtml},
}