Nrnberger - Multivariate Approximation and Splines - New paperback or - X555z

Reimer - Multivariate Polynomial Approximation - New hardback or cased - X555z

Du - Design and Analysis of Approximation Algorithms - New hardback or - X555z

Temlyakov - Greedy Approximation - New hardback or cased book - X555z

Reimer - Multivariate Polynomial Approximation - New paperback or soft - X555z

Nishisato - Measurement and Multivariate Analysis - New paperback or s - X555z

Multivariate Approximation: Recent Trends and Results, , Excellent Book

Gupta - Computation and Approximation - New paperback or softback - X555z