@article{PismaZhETF.25.185,
    title = {Loss of symmetry of local environment of tin atoms in $Pb_{1-x}Sn_xTe$ crystal lattice},
    author = {Nikolaev, N. N. and Potapov, V. P. and Shotov, A. P. and Yurchakevich, E. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {25},
    issue = {4},
    pages = {185},
    year = {1977},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21106.shtml},
}