@article{PismaZhETF.52.691,
    title = {Excitonic and intraatomic absorption in $Nd_2S_3$-activated $TlGaS_2$ single crystals},
    author = {Dzhafarova, S. Z. and Ragimova, N. A. and Abutalybov, G. I.},
    journal = {Письма в ЖЭТФ},
    volume = {52},
    issue = {1},
    pages = {691},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17433.shtml},
}