@article{PismaZhETF.18.106,
    title = {Investigation of impurity diffusion in a Tokamak by special methods},
    author = {Gervids, V. I. and Krupin, V. A.},
    journal = {Письма в ЖЭТФ},
    volume = {18},
    issue = {2},
    pages = {106},
    year = {1973},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23893.shtml},
}