@article{NUMA_1989__54_3_133312,
     author = {N.S. Sapidis and P.D. Kaklis and T.A. Loukakis},
     title = {A {Method} for {Computing} the {Tension} {Parameters} in {Convexity-Preserving} {Spline-in-Tension} {Interpolation.}},
     journal = {Numerische Mathematik},
     pages = {179--192},
     publisher = {mathdoc},
     volume = {54},
     number = {3},
     year = {1989},
     zbl = {0636.65010},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1989__54_3_133312/}
}