@article{PismaZhETF.36.152,
    title = {Experimental investigation of the density of states of a quasi-one-dimensional  vibrational exciton is isotopically mixed KN03 crystals},
    author = {Belousov, M. V. and Pogarev, D. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {36},
    issue = {5},
    pages = {152},
    year = {1982},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_20138.shtml},
}