@article{10_4064_ap_71_2_141_150,
     author = {Miros{\l}aw Baran},
     title = {Homogeneous extremal function for a ball in {\ensuremath{\mathbb{R}}{\texttwosuperior}}},
     journal = {Annales Polonici Mathematici},
     pages = {141--150},
     publisher = {mathdoc},
     volume = {71},
     number = {2},
     year = {1999},
     doi = {10.4064/ap-71-2-141-150},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-71-2-141-150/}
}