TY - JOUR AU - A. V. Reztsov TI - Nonnegative trigonometric polynomials in many variables and cubature formulas of Gaussian type JO - Matematičeskie zametki PY - 1991 SP - 69 EP - 74 VL - 50 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1991_50_5_a9/ LA - ru ID - MZM_1991_50_5_a9 ER -