@article{PismaZhETF.51.111,
    title = {The gravitational topological Chern-Simons term in a film of superfluid $^3H-A$},
    author = {Volovik, G. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {51},
    issue = {2},
    pages = {111},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17200.shtml},
}