@article{TM_1964_70_a2,
     author = {K. K. Golovkin},
     title = {On the approximation of functions in arbitrary norms},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {26--37},
     year = {1964},
     volume = {70},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1964_70_a2/}
}