@article{NUMA_1972__20_132197,
     author = {Paula P. Chan},
     title = {Singular {Splines.}},
     journal = {Numerische Mathematik},
     pages = {342--349},
     publisher = {mathdoc},
     volume = {20},
     year = {1972},
     zbl = {0241.65014},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1972__20_132197/}
}