@article{TM_1989_189_a3,
     author = {N. L. Zmatrakov},
     title = {Convergence of multiple interpolational splines and their derivatives},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {78--97},
     publisher = {mathdoc},
     volume = {189},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1989_189_a3/}
}