@article{PismaZhETF.75.263,
    title = {Monopole creation operator in presence of matter},
    author = {Belavin, V. A. and Chernodub, M. N. and Polikarpov, M. I.},
    journal = {Письма в ЖЭТФ},
    volume = {75},
    issue = {5},
    pages = {263},
    year = {2002},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_15661.shtml},
}