@article{PismaZhETF.4.345,
    title = {Mass-spectrometric Observation of Long-lived Auto-ionization States of the Ions $Ca^+$ and $Sr^+$},
    author = {Kupriyanov, S. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {4},
    issue = {9},
    pages = {345},
    year = {1966},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25032.shtml},
}