@article{PismaZhETF.26.385,
    title = {Indirect excitons in GaS},
    author = {Belen'kii, G. L. and Godzhaev, M. O. and Salaev, E. Yu.},
    journal = {Письма в ЖЭТФ},
    volume = {26},
    issue = {5},
    pages = {385},
    year = {1977},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_20905.shtml},
}