@article{10_14708_cm_v17i1_5752,
     author = {Z. J. Jakubowski},
     title = {On some properties of extremal functions of {Carath\'eodory}},
     journal = {Commentationes Mathematicae},
     pages = { 71--80},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {1973},
     doi = {10.14708/cm.v17i1.5752},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v17i1.5752/}
}