@article{PismaZhETF.70.3,
    title = {On induced $CPT$-odd Chern-Simons terms in 3+1 effective action},
    author = {Volovik, G. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {70},
    issue = {1},
    pages = {3},
    year = {1999},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_13958.shtml},
}