@article{PismaZhETF.51.343,
    title = {Two-loop approximation in quantum gravitation},
    author = {Bukhbinder, I. L. and Odintsov, S. D. and Fonarev, O. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {51},
    issue = {7},
    pages = {343},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17268.shtml},
}