@article{PismaZhETF.4.201,
    title = {Absorption Edge in the Semiconducting Ferroelectrics SbSBr, BiSBr, and SbSI},
    author = {Fridkin, F. M. and Gerzanich, E. I. and Groshik, I. I. and Lyakhovitskaya, V. A.},
    journal = {Письма в ЖЭТФ},
    volume = {4},
    issue = {6},
    pages = {201},
    year = {1966},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24871.shtml},
}