File list (Check if you may need any files):
Interpolation & Approximation
.............................\AppForSurf.m
.............................\Basisfuns.m
.............................\BsplineApproximation.m
.............................\BsplineInterpolate.m
.............................\BsplineSurfApp.m
.............................\BsplineSurfInter.m
.............................\InterForSurf.m
.............................\plotNUBSsurface.m
.............................\pointonsurface.m
.............................\testSurfApp.m
.............................\testSurfInter.m