@article{PismaZhETF.48.202,
    title = {Bound state of an exciton at a slightly attracting defect in a semiconductor with a degenerate valence band},
    author = {Raikh, M. E. and Efros, Al. L.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {48},
    issue = {4},
    pages = {202},
    year = {1988},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_16691.shtml},
}