TY  - JOUR
AU  - Ditzian, Z.
AU  - Prymak, A.
TI  - Approximation by Dilated Averages and K-Functionals
JO  - Canadian journal of mathematics
PY  - 2010
SP  - 737
EP  - 757
VL  - 62
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-2010-040-1/
DO  - 10.4153/CJM-2010-040-1
ID  - 10_4153_CJM_2010_040_1
ER  -