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@article{SF_1972__5_133921, author = {M.W. Grossman}, title = {A categorical approach to invariant means and fixed point properties.}, journal = {Semigroup forum}, pages = {14--44}, publisher = {mathdoc}, volume = {5}, year = {1972}, zbl = {0259.43011}, url = {http://geodesic.mathdoc.fr/item/SF_1972__5_133921/} }
M.W. Grossman. A categorical approach to invariant means and fixed point properties.. Semigroup forum, Tome 5 (1972), pp. 14-44. http://geodesic.mathdoc.fr/item/SF_1972__5_133921/