Discrete piecewise monotonic approximation by a strictly convex distance function

Signs of divided differences yield least squares data fitting with constrained monotonicity or convexity

Journal of Computational and Applied Mathematics

A theorem for piecewise convex-concave data approximation

Journal of Computational and Applied Mathematics - Special Issue: Proceedings of the 10th international congress on computational and applied mathematics (ICCAM-2002)

Algorithm 863: L2WPMA, a Fortran 77 package for weighted least-squares piecewise monotonic data approximation

ACM Transactions on Mathematical Software (TOMS)

An adaptive algorithm for least squares piecewise monotonic data fitting

Computational Statistics & Data Analysis