TY  - JOUR
AU  - K. I. Oskolkov
TI  - Polygonal approximation of functions of two variables
JO  - Sbornik. Mathematics
PY  - 1979
SP  - 851
EP  - 861
VL  - 35
IS  - 6
UR  - http://geodesic.mathdoc.fr/item/SM_1979_35_6_a4/
LA  - en
ID  - SM_1979_35_6_a4
ER  -