The tar file contains all matlab in the subdirectly. You may simpley download the tar rather than download the matlab code one by one.

Example 18 ( Gaussian Krigging and Local polynomial fit)

Example 19 ( All code)

Example 2 (All code)

Borohole (Spline Method and Bayesian Method)

Piston (All code)

Example 22 (All code)

Valvetrain (All code)

Example 7 (All code)