@article{PismaZhETF.52.920,
    title = {Thermal expansion of $YBa_2Cu_3O_7$ single crystal},
    author = {Aleksandrov, I. V. and Zibrov, I. P. and Stishov, S. M.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {52},
    issue = {5},
    pages = {920},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17498.shtml},
}