@article{JETPL.111.249,
    title = {Four-Fold Anisotropy of the Parallel Upper Critical Magnetic Field in a Pure Layered d-Wave Superconductor at T = 0},
    author = {Lebed, A. G. and Sepper, O.},
    journal = {JETP Lett.},
    volume = {111},
    issue = {4},
    pages = {239},
    year = {2020},
    doi = {10.1134/S0021364020040037},
    url = {http://jetpletters.ru/ps/dx/10.31857/S0370274X20040098},
    note = {[Pisma v ZhETF 111, 249 (2020)]}
}