@article{VTGU_2007_1_a7,
     author = {G. D. Sadritdinova},
     title = {Extremal control for modulus of derivative on class of $p$-symmetrical functions},
     journal = {Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika},
     pages = {54--57},
     year = {2007},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTGU_2007_1_a7/}
}