Geodesic
Approximation of functions with a given modulus of continuity by partial sums of Laguerre–Fourier series
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Tome 22 (1967) no. 2 
A. Kh. Babaev. Approximation of functions with a given modulus of continuity by partial sums of Laguerre–Fourier series. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Tome 22 (1967) no. 2. http://geodesic.mathdoc.fr/item/RM_1967_22_2_a24/
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