@article{DAN_1990_315_2_a9,
     author = {V. E. Maiorov},
     title = {A multiplicative inequality for derivatives, and its applications},
     journal = {Doklady Akademii Nauk},
     pages = {296--298},
     publisher = {mathdoc},
     volume = {315},
     number = {2},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_315_2_a9/}
}