@article{NUMA_1970__15_132002,
     author = {TH.R. LUCAS},
     title = {Generalization of {L-Splines.}},
     journal = {Numerische Mathematik},
     pages = {359--370},
     publisher = {mathdoc},
     volume = {15},
     year = {1970},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1970__15_132002/}
}