@article{10_14708_cm_v53i2_796,
     author = {Roman Ger and Maciej Sablik},
     title = {Mean values for vector valued functions and corresponding functional equations},
     journal = {Commentationes Mathematicae},
     pages = { 355\ensuremath{-}369},
     publisher = {mathdoc},
     volume = {53},
     number = {2},
     year = {2013},
     doi = {10.14708/cm.v53i2.796},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v53i2.796/}
}