1. D. Ch. Fremlin, Topological Riesz Spaces and Measure Theory (Cambridge Univ. Press, Cambridge, 1974).
2. E. Hewitt and K. Stromberg, Real and Abstract Analysis (Springer-Verlag, Berlin, 1965).
3. F. Riesz, C.R. Acad. Sci. Paris 149, 974–977 (1909).
4. J. Radon, Sitzungsber. Math.-Natur. Kl. Akad. Wiss. Wien. 122, 1295–1438 (1913).
5. F. Hausdorff, Grundzüge der Mengenlehre (Vienna, 1914).