@article{MM_1997_9_6_a5,
     author = {N. N. Kalitkin and L. V. Kuzmina},
     title = {Natural interpolate splines of arbitrary order},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {67--81},
     publisher = {mathdoc},
     volume = {9},
     number = {6},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1997_9_6_a5/}
}