@article{MZM_1989_45_3_a10,
     author = {A. F. Sidorenko and B. S. Stechkin},
     title = {One class of extremal geometric constants and their applications},
     journal = {Matemati\v{c}eskie zametki},
     pages = {101--107},
     publisher = {mathdoc},
     volume = {45},
     number = {3},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1989_45_3_a10/}
}