@article{10_4064_ap_34_1_13_23,
     author = {R. Taberski},
     title = {Approximation of functions possessing derivatives of positive orders},
     journal = {Annales Polonici Mathematici},
     pages = {13--23},
     publisher = {mathdoc},
     volume = {34},
     number = {1},
     year = {1977},
     doi = {10.4064/ap-34-1-13-23},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-34-1-13-23/}
}