[1] R. B. Burckel: Weakly almost periodic functions on semigroups. Gordon and Breach, 1970. MR 0263963 | Zbl 0192.48602

[2] G. Crombez W. Govaerts: The convolution-induced topology on $L\sb{\infty }(G)$ and linearly dependent translates in $L\sb{1}(G)$. Internat. J. Math. Mathem. Sciences 5 (1982), 11-20. DOI 10.1155/S0161171282000027 | MR 0666489

[3] G. Crombez W. Govaerts: Strongly and weakly almost periodic multipliers from $L\sb{1}(G)$ to $L\sb{\infty }(G)$. Bull. Soc. Math. Belg. 32 - Ser. В (1980), 179-188. MR 0682641

[4] N. Dimford J. T. Schwartz: Linear operators, Part I. Wiley-Inter science, 1958.

[5] E. Granirer: Exposed points of convex sets and weak sequential convergence. Memoirs of the A.M.S., 123, 1972. MR 0365090 | Zbl 0258.46001

[6] F. P. Greenleaf: Invariant means on topological groups. Van Nostrand-Reinhold, 1969. MR 0251549 | Zbl 0174.19001

[7] L. H. Loomis: The spectral characterization of a class of almost periodic functions. Annals of Math. 72 (1960), 362-368. DOI 10.2307/1970139 | MR 0120502 | Zbl 0094.05801

[8] E. Hewitt K. A. Ross: Abstract harmonic analysis I. Springer, 1963.