@article{PismaZhETF.38.94,
    title = {Singularities of the dielectric-constant tensor (DCT) of the electron liquid in metals},
    author = {Kaganov, V. I. and Plyavenek, A. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {38},
    issue = {3},
    pages = {94},
    year = {1983},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22559.shtml},
}