@article{MZM_1975_18_6_a1,
     author = {V. F. Babenko and A. A. Ligun},
     title = {Interpolation by polyhedral functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {803--814},
     year = {1975},
     volume = {18},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1975_18_6_a1/}
}