@article{ZNSL_2014_425_a2,
     author = {E. V. Mukoseeva and A. I. Nazarov},
     title = {On symmetry of the extremal in some embedding theorems},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {35--45},
     year = {2014},
     volume = {425},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2014_425_a2/}
}