@article{MZM_1999_65_4_a10,
     author = {S. G. Merzlyakov},
     title = {The {Clarkson{\textendash}Erd\"os} theorem for several variables},
     journal = {Matemati\v{c}eskie zametki},
     pages = {594--598},
     year = {1999},
     volume = {65},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1999_65_4_a10/}
}