TY - JOUR AU - V. V. Ivanov TI - Optimal precison approximation of functions with singular points unknow in advance JO - Informatics and Automation PY - 1987 SP - 120 EP - 121 VL - 180 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a66/ LA - ru ID - TRSPY_1987_180_a66 ER -