@article{DAN_1965_165_4_a10,
     author = {Sh. R. Mamedov},
     title = {Certain interrelations between the degree of best approximation of analytic functions and the coefficients of their series expansion},
     journal = {Doklady Akademii Nauk},
     pages = {770--772},
     publisher = {mathdoc},
     volume = {165},
     number = {4},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_165_4_a10/}
}