TY - JOUR AU - Yu. Brudnyi TI - Nonlinear Piecewise Polynomial Approximation of Functions from Besov Spaces JO - Mathematica balkanica PY - 2002 SP - 339 VL - 16 IS - 1-4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MABA_2002_16_1-4_a19/ ID - MABA_2002_16_1-4_a19 ER -