TY - JOUR AU - O. V. Besov AU - V. P. Il'in TI - Projection representation of functions by a~difference JO - Informatics and Automation PY - 1979 SP - 3 EP - 10 VL - 150 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1979_150_a0/ LA - ru ID - TRSPY_1979_150_a0 ER -