@article{MS2_1959__7_165709,
     author = {Harry Kesten},
     title = {Full {Banach} {Mean} {Values} on {Countable} groups.},
     journal = {Mathematica Scandinavica},
     pages = {146--156},
     publisher = {mathdoc},
     volume = {7},
     year = {1959},
     zbl = {0092.26704},
     url = {http://geodesic.mathdoc.fr/item/MS2_1959__7_165709/}
}