TY  - JOUR
AU  - S. Z. Rafal'son
TI  - Generalized shift, generalized convolution and some extremal relations of the theory of approximation of function
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1986
SP  - 150
EP  - 157
VL  - 149
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1986_149_a13/
LA  - ru
ID  - ZNSL_1986_149_a13
ER  -