@article{PismaZhETF.9.548,
    title = {Concerning Mass Splitting in Isomultiplets of Pseudoscalar Mesons},
    author = {Chkareuli, Dzh. L.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {9},
    issue = {9},
    pages = {548},
    year = {1969},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26799.shtml},
}