@article{PismaZhETF.33.640,
    title = {Anomalous thermal broadening of the optical lines of impurity centers in a glass},
    author = {Osad'ko, I. S.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {33},
    issue = {12},
    pages = {640},
    year = {1981},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23102.shtml},
}