TY - JOUR AU - D. V. Gorbachev AU - V. I. Ivanov TI - Approximation in~$L_2$ by Partial Integrals of the Fourier Transform over the Eigenfunctions of the Sturm--Liouville Operator JO - Matematičeskie zametki PY - 2016 SP - 519 EP - 530 VL - 100 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2016_100_4_a4/ LA - ru ID - MZM_2016_100_4_a4 ER -