@article{DAN_1972_202_6_a4,
     author = {L. D. Kudryavtsev},
     title = {On parametric inequalities for functions of several variables},
     journal = {Doklady Akademii Nauk},
     pages = {1261--1264},
     publisher = {mathdoc},
     volume = {202},
     number = {6},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_202_6_a4/}
}