@article{PismaZhETF.5.376,
    title = {Energy Spectrum of a Finite Fermi System},
    author = {Likhachev, V. N. and Shushko, V. N.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {5},
    issue = {10},
    pages = {376},
    year = {1967},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25204.shtml},
}