@article{NUMA_1986__48_133091,
     author = {David Culpin},
     title = {Calculation of {Cubic} {Smoothing} {Splines} for {Equally} {Spaced} {Data.}},
     journal = {Numerische Mathematik},
     pages = {627--638},
     publisher = {mathdoc},
     volume = {48},
     year = {1986},
     zbl = {0617.65007},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1986__48_133091/}
}