TY  - JOUR
AU  - V. A. Klyachin
TI  - Estimates for piecewise linear approximation of derivative functions of Sobolev classes
JO  - The Bulletin of Irkutsk State University. Series Mathematics
PY  - 2024
SP  - 78
EP  - 89
VL  - 49
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IIGUM_2024_49_a5/
LA  - ru
ID  - IIGUM_2024_49_a5
ER  -