Estimates for $n$-Widths of Two-Weighted Summation Operators on Trees
A. A. Vasil'eva

This publication is cited in the following articles:

1. A. A. Vasil'eva, “Diameters of Sobolev weight classes with a “small” set of singularities for weights”, Russ. J. Math. Phys., 26:4 (2019), 517–543      
2. A. A. Vasil'eva, “Estimates for the widths of discrete function classes generated by a two-weight summation operator”, Proc. Steklov Inst. Math., 294 (2016), 291–307