@article{PismaZhETF.21.161,
    title = {Edge luminescence of excitons in ionic crystals},
    author = {Kuusmann, I. L. and Liblik, P. Kh. and Lushchik, Ch. B.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {21},
    issue = {2},
    pages = {161},
    year = {1975},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22275.shtml},
}