Interpolation of several multiparametric approximation spaces. - Irina Asekritova; Yu. A. Brudnyi (J. Approx. Theory, 2004)

On an approximation family of discrete polynomial operators. - Yu. A. Brudnyi; I. E. Gopengauz (J. Approx. Theory, 2012)

Erratum to "On an approximation family of discrete polynomial operators" [J. Approx. Theory 164 (2012) 938-953]. - Yu. A. Brudnyi; I. E. Gopengauz (J. Approx. Theory, 2012)

Nonlinear piecewise polynomial approximation and multivariate BV spaces of a Wiener-L. Young type. I. - Yu. A. Brudnyi (J. Approx. Theory, 2017)

Polynomial approximation in convex domains. - Yu. A. Brudnyi (J. Approx. Theory, 2018)