@article{PismaZhETF.23.506,
    title = {Phonon spectrum in the vicinity of the phase transition from a crystal to a nematic liquid crystal, and the order parameter},
    author = {Afanas'eva, N. I. and Burlakov, V. M. and Zhizhin, G. N.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {23},
    issue = {9},
    pages = {506},
    year = {1976},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27561.shtml},
}