@article{VMUMM_1990_4_a21,
     author = {N. K. Rakhmetov},
     title = {On the uniqueness of a polynomial of best approximation in the classes $\varphi(L)$},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {83--85},
     publisher = {mathdoc},
     number = {4},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1990_4_a21/}
}