@article{PismaZhETF.58.139,
    title = {Could the oxygen superstructure in $YBa_2Cu_3O_{6.35}$ exist?},
    author = {Schreckenberg, M. and Uimin, G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {58},
    issue = {2},
    pages = {139},
    year = {1993},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_4689.shtml},
}