TY - JOUR AU - K. Yu. Osipenko TI - Optimal recovery of derivatives of bounded analytic and harmonic functions from inaccurate data JO - Matematičeskie zametki PY - 1993 SP - 87 EP - 97 VL - 53 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1993_53_5_a9/ LA - ru ID - MZM_1993_53_5_a9 ER -