TY - JOUR AU - R. M. Gadzhimirzaev TI - Approximation properties of de~la~Vall\'ee Poussin means of~partial Fourier series in Meixner--Sobolev polynomials JO - Sbornik. Mathematics PY - 2024 SP - 1202 EP - 1223 VL - 215 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2024_215_9_a3/ LA - en ID - SM_2024_215_9_a3 ER -