Chen, Guang Gui et al., Non-Linear Approximation of Functions with Mixed Smoothness by Sets of Finite Pseudo-Dimension, Acta mathematica Sinica. English series (Print) , 23(4), 2007, pp. 671-676
In this paper, the non-linear approximation on the class of multivariate functions with bounded mixed derivatives is investigated, and the asymptotic degree of the non-linear width on this class is determined.