Extension of functions from anisotropic spaces with preservation of class
V. I. Burenkov, B. L. Fain

This publication is cited in the following articles:

1. S. N. Kudryavtsev, “Extension of functions in non-isotropic Nikolskii–Besov spaces and approximation of their derivatives”, Izv. Math., 82:5 (2018), 931–983                
2. V. I. Burenkov, A. L. Gorbunov, “Exact bounds for the minimum norm of extension operators for Sobolev spaces”, Izv. Math., 61:1 (1997), 1–43