@article{PismaZhETF.19.7,
    title = {Dependence of the critical-current density on the grain dimension in polycrystalline niobium},
    author = {Vinnikov, L. Ya. and Zharikov, O. V. and Kopetskii, Ch. P. and Shiyanova, E. N.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {19},
    issue = {1},
    pages = {7},
    year = {1974},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26928.shtml},
}