@article{MZM_1974_15_5_a8,
     author = {V. N. Temlyakov},
     title = {On uniqueness of the polynomial of best approximation of the function $\cos kx$ by trigonometric polynomials in the $L$ metric},
     journal = {Matemati\v{c}eskie zametki},
     pages = {729--737},
     publisher = {mathdoc},
     volume = {15},
     number = {5},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_15_5_a8/}
}