TY  - JOUR
AU  - K. Yu. Osipenko
TI  - On the precise values of $n$-widths for classes defined by cyclic variation diminishing operators
JO  - Sbornik. Mathematics
PY  - 1997
SP  - 1371
EP  - 1383
VL  - 188
IS  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1997_188_9_a5/
LA  - en
ID  - SM_1997_188_9_a5
ER  -