@article{JGG_1999_3_2_a2,
     author = {J. Pilnikova and P. Chalmoviansky},
     title = {Basis of {Quartic} {Splines} over {Triangulation}},
     journal = {Journal for geometry and graphics},
     pages = {161--176},
     publisher = {mathdoc},
     volume = {3},
     number = {2},
     year = {1999},
     url = {http://geodesic.mathdoc.fr/item/JGG_1999_3_2_a2/}
}