@article{PismaZhETF.94.752,
    title = {Topological properties of superconducting junctions},
    author = {Pikulin, D. I. and Nazarov, Y. N.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {94},
    issue = {9},
    pages = {752},
    year = {2011},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_29573.shtml},
}