@article{PismaZhETF.19.92,
    title = {Negative charge of electron-hole drops in germanium},
    author = {Pokrovskii, Ya. E. and Svistunova, M. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {19},
    issue = {2},
    pages = {92},
    year = {1974},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26952.shtml},
}