@article{PismaZhETF.56.87,
    title = {Perturbation theory based on the physical branch of the renormalization-group equation},
    author = {Filippov, A. E. and Radievskii, A. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {56},
    issue = {2},
    pages = {87},
    year = {1992},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19385.shtml},
}