1. Extreme positive operators on algebras of functions;Bonsall, F. F.;Math. Scand.,1966
2. Reihe: Reelle Funktionen;Day, Mahlon M.,1958
3. Means for the bounded functions and ergodicity of the bounded representations of semi-groups;Day, Mahlon M.;Trans. Amer. Math. Soc.,1950
4. Amenable semigroups;Day, Mahlon M.;Illinois J. Math.,1957
5. Fixed-point theorems for compact convex sets;Day, Mahlon M.;Illinois J. Math.,1961