@article{PismaZhETF.28.3,
    title = {The sign of the static dielectric constant of simple metals},
    author = {Dolgov, O. V. and Maksimov, E. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {28},
    issue = {1},
    pages = {3},
    year = {1978},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23810.shtml},
}