@article{PismaZhETF.30.668,
    title = {Spectrum of electrons localized above liquid $^3He$},
    author = {Volodin, A. P. and Edel'man, V. S.},
    journal = {Письма в ЖЭТФ},
    volume = {30},
    issue = {10},
    pages = {668},
    year = {1979},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_20724.shtml},
}