@article{MZM_1981_29_4_a12,
     author = {V. T. Shevaldin},
     title = {A problem of extremal interpolation},
     journal = {Matemati\v{c}eskie zametki},
     pages = {603--622},
     publisher = {mathdoc},
     volume = {29},
     number = {4},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1981_29_4_a12/}
}