V. V. Arestov, A. A. Seleznev, “Best $L^2$-Extension of Algebraic Polynomials from the Unit Euclidean Sphere to a Concentric Sphere”, Trudy Inst. Mat. i Mekh. UrO RAN, 26:2 (2020), 47–55; Proc. Steklov Inst. Math. (Suppl.), 313, suppl. 1 (2021), S6–S13
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