1. Topological Vector Spaces;Bourbaki,1981
2. Commuting functions with no common fixed point;Boyce;Trans. Am. Math. Soc.,1969
3. Fixed-point theorem for compact convex sets;Day;Ill. J. Math.,1961
4. Distal transformation groups;Ellis;Pac. J. Math.,1958
5. Topics on weakly almost periodic functions;Hsu,1985