Sun Yong-sheng

Publications in Math-Net.Ru

1. Best approximation of certain classes of smooth functions on the real axis by splines of a higher order
   
   Mat. Zametki, 48:4 (1990),  100–109
2. On the best approximation of periodic differentiable functions by trigonometric polynomials. II
   
   Izv. Akad. Nauk SSSR Ser. Mat., 25:1 (1961),  143–152
3. Best approximation of periodic differentiable functions by trigonometric polynomials
   
   Izv. Akad. Nauk SSSR Ser. Mat., 23:1 (1959),  67–92
4. On the best approximation of classes of functions representable in the convolution form
   
   Dokl. Akad. Nauk SSSR, 118:2 (1958),  247–250