@article{PismaZhETF.12.237,
    title = {Determination of the Electron Binding Energy in the Negative Ion $He^-$ by Detaching the Electron with an Electric Field},
    author = {Oparin, V. A. and Il'in, R. N. and Serenkov, I. T. and Solov'ev, E. S. and Fedorenko, N. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {12},
    issue = {5},
    pages = {237},
    year = {1970},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26310.shtml},
}