TY  - JOUR
AU  - M. G. Pleshakov
AU  - S. V. Tyshkevich
TI  - One counterexample of shape-preserving approximation
JO  - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics
PY  - 2014
SP  - 144
EP  - 150
VL  - 14
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ISU_2014_14_2_a3/
LA  - ru
ID  - ISU_2014_14_2_a3
ER  -