@article{PismaZhETF.23.574,
    title = {Complicated exciton-impurity complexes in tin dioxide},
    author = {Agekyan, V. T.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {23},
    issue = {10},
    pages = {574},
    year = {1976},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27581.shtml},
}