Non-archimedean invariant means
Compositio Mathematica, Tome 30 (1975) no. 2, p. 169-180
@article{CM_1975__30_2_169_0,
     author = {Schikhof, Wilhelm H.},
     title = {Non-archimedean invariant means},
     journal = {Compositio Mathematica},
     publisher = {Noordhoff International Publishing},
     volume = {30},
     number = {2},
     year = {1975},
     pages = {169-180},
     zbl = {0302.43008},
     mrnumber = {397306},
     language = {en},
     url = {http://www.numdam.org/item/CM_1975__30_2_169_0}
}
Schikhof, W. H. Non-archimedean invariant means. Compositio Mathematica, Tome 30 (1975) no. 2, pp. 169-180. http://www.numdam.org/item/CM_1975__30_2_169_0/

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