@article{PismaZhETF.55.29,
    title = {Localized magnetic centers in the compound $YBa_2Cu_3O_{6+x}(x\leq1)$},
    author = {Ivanov, M. A. and Loktev, V. M. and Pogorelov, Yu. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {55},
    issue = {1},
    pages = {29},
    year = {1992},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19180.shtml},
}