@article{AA_2019_31_5_a5,
     author = {M. I. Revyakov},
     title = {Schur-convex functions of the $2$nd order on $ \mathbb{R}^n$},
     journal = {Algebra i analiz},
     pages = {184--205},
     publisher = {mathdoc},
     volume = {31},
     number = {5},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2019_31_5_a5/}
}