@article{NUMA_1992__63_1_133674,
     author = {John C. Clements},
     title = {A convexity-preserving {C2} parametric rational cubic interpolation.},
     journal = {Numerische Mathematik},
     pages = {165--172},
     year = {1992},
     volume = {63},
     number = {1},
     zbl = {0763.41001},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1992__63_1_133674/}
}