@article{MAN_1966__165_161436,
     author = {P. G\"unther},
     title = {Sph\"arische {Mittelwerte} in kompakten harmonischen {Riemannschen} {Mannigfaltigkeiten.}},
     journal = {Mathematische Annalen},
     pages = {281--296},
     publisher = {mathdoc},
     volume = {165},
     year = {1966},
     zbl = {0144.20801},
     url = {http://geodesic.mathdoc.fr/item/MAN_1966__165_161436/}
}