@article{VMUMM_2007_2_a1,
     author = {D. A. Silaev},
     title = {Twice continuously differentiable $\mathrm{S}$-splines},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {12--17},
     publisher = {mathdoc},
     number = {2},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2007_2_a1/}
}