Shmandin Yu M

Publications in Math-Net.Ru

1. On the question of the approximation of functions by de la Vallée-Poussin means
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1969, no. 5,  85–98
2. Summability of orthogonal series by some linear methods
   
   Mat. Zametki, 5:6 (1969),  753–762