@article{PismaZhETF.32.587,
    title = {Symmetry change due to second-order phase transitions at a surface},
    author = {Ipatova, I. P. and Kitaev, Yu. E. and Subashiev, A. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {32},
    issue = {10},
    pages = {587},
    year = {1980},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21804.shtml},
}