@article{JETPL.111.475,
    title = {Upper Critical Field of a Two-Band SrFe2 ? xNixAs2 Superconductor},
    author = {Maltsev, E. I. and Vlasenko, V. A. and Sobolevskii, O. A. and Sadakov, A. V. and Massalimov, B. I. and Pervakov, K. S.},
    journal = {JETP Lett.},
    volume = {111},
    issue = {7},
    pages = {403},
    year = {2020},
    doi = {10.1134/S0021364020070061},
    url = {http://jetpletters.ru/ps/dx/10.31857/S0370274X20070097},
    note = {[Pisma v ZhETF 111, 475 (2020)]}
}