@article{MT_2019_22_1_a1,
     author = {V. V. Bogdanov and Yu. S. Volkov},
     title = {Shape-preservation conditions for cubic spline interpolation},
     journal = {Matemati\v{c}eskie trudy},
     pages = {19--67},
     publisher = {mathdoc},
     volume = {22},
     number = {1},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2019_22_1_a1/}
}