@article{PismaZhETF.50.293,
    title = {Effective conductivity of a three-dimensional two-phase medium},
    author = {Arkhincheev, V. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {50},
    issue = {6},
    pages = {293},
    year = {1989},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17113.shtml},
}