@article{VMUMM_1995_4_a5,
     author = {Yu. A. Kaz'min},
     title = {On an inequality},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {25--30},
     year = {1995},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1995_4_a5/}
}