@article{PismaZhETF.21.670,
    title = {Two modes of collective excitations of a Fermi-liquid drop and sum rules for electromagnetic transitions in atomic nuclei},
    author = {Khodel', V. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {21},
    issue = {11},
    pages = {670},
    year = {1975},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22519.shtml},
}