@article{PismaZhETF.40.38,
    title = {Finiteness of N=4 supersymmetry sigma models},
    author = {Kogan, Ya. I. and Morozov, A. Yu. and Perelomov, A. M.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {40},
    issue = {1},
    pages = {38},
    year = {1984},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18950.shtml},
}