@article{PismaZhETF.20.441,
    title = {Investigation of the role of damping in absorption of light by excitons},
    author = {Kreingol'd, F. I. and Makarov, V. L.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {20},
    issue = {7},
    pages = {441},
    year = {1974},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27301.shtml},
}