@article{PismaZhETF.57.273,
    title = {Asymptotic form of higher orders of the 1/n expansion},
    author = {Popov, V. S. and Sergeev, A. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {57},
    issue = {5},
    pages = {273},
    year = {1993},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17776.shtml},
}