@article{PismaZhETF.11.97,
    title = {Experimental Investigation of the "Memory" Effect of He-Ne Lasers},
    author = {Belousova, I. M. and Danilov, O. B. and Zapryagaev, A. F.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {11},
    issue = {2},
    pages = {97},
    year = {1970},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26065.shtml},
}