Kharrik I Yu

Publications in Math-Net.Ru

1. Approximation of functions which vanish on the boundary of a region, together with their partial derivatives, by functions of a special type
   
   Sibirsk. Mat. Zh., 4:2 (1963),  408–425
2. Approximation by functions of special type to functions vanishing, together with their gradient, on the boundary of a region
   
   Mat. Sb. (N.S.), 47(89):2 (1959),  177–208
3. On approximation of functions vanishing on the boundary of a region by functions of a special form
   
   Mat. Sb. (N.S.), 37(79):2 (1955),  353–384