@article{NUMA_1984__45_132957,
     author = {R. Smarzewski and A. Bujalska-Horbowicz},
     title = {Quartic {X-Splines.}},
     journal = {Numerische Mathematik},
     pages = {135--148},
     publisher = {mathdoc},
     volume = {45},
     year = {1984},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1984__45_132957/}
}