@article{PismaZhETF.75.267,
    title = {Low-energy gluon contributions to the   vacuum polarization of heavy quarks},
    author = {Groote, S. and Pivovarov, A. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {75},
    issue = {5},
    pages = {267},
    year = {2002},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_15662.shtml},
}