An interactive system is presented which allows flexible shape preserving cubic spline interpolation. The corresponding parameter-depending minimization problem is considered, but similar results are then obtained by means of an interactive adjustment procedure for which the total amount in arithmetic operation is only 0(n). © 1987.
Montefusco, L. B. (1987). An interactive procedure for shape preserving cubic spline interpolation. Computers and Graphics, 11(4), 389–392. https://doi.org/10.1016/0097-8493(87)90055-0