@article{FPM_1997_3_4_a2,
     author = {\`E. M. Galeev and V. M. Tikhomirov},
     title = {Stechkin's works devoted to optimal methods of approximation},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {961--965},
     publisher = {mathdoc},
     volume = {3},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_1997_3_4_a2/}
}