@article{NUMA_1976__26_132423,
     author = {M. van Veldhuizen},
     title = {A {Refinement} {Process} for {Collocation} {Approximations.}},
     journal = {Numerische Mathematik},
     pages = {397--408},
     year = {1976},
     volume = {26},
     zbl = {0319.65052},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1976__26_132423/}
}