@article{PismaZhETF.25.218,
    title = {Symmetry of instanton solutions in gauge theories},
    author = {Leznov, A. N.},
    journal = {Письма в ЖЭТФ},
    volume = {25},
    issue = {4},
    pages = {218},
    year = {1977},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21117.shtml},
}