@article{10_21136_CPM_1972_108675,
     author = {P\v{r}ikryl, Petr},
     title = {Optimal universal approximations of {Fourier} coefficients in spaces of continuous periodic functions},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {259--296},
     publisher = {mathdoc},
     volume = {097},
     number = {3},
     year = {1972},
     doi = {10.21136/CPM.1972.108675},
     mrnumber = {0450876},
     zbl = {0238.42001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1972.108675/}
}