@article{PismaZhETF.91.451,
    title = {Order parameter sign-reversal near $s_\pm$-superconductor surface},
    author = {Bobkov, A. M. and Bobkova, I. V.},
    journal = {Письма в ЖЭТФ},
    volume = {91},
    issue = {8},
    pages = {451},
    year = {2010},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_28803.shtml},
}