@article{DAN_1961_138_1_a4,
     author = {K. K. Golovkin},
     title = {Two classes of inequalities for sufficiently smooth functions of $n$~variables},
     journal = {Doklady Akademii Nauk},
     pages = {22--25},
     year = {1961},
     volume = {138},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_1_a4/}
}