• [I] Lynn H. Loomis, An introduction to abstract harmonic analysis, D. Van Nostrand Company, Inc., Toronto-New York-London, 1953. MR 0054173
• [II] G. Szegö, Über die Randwerte einer analytischen Funktion, Math. Ann. 84 (1921), no. 3-4, 232–244 (German). MR 1512033, https://doi.org/10.1007/BF01459407
• [III] I. M. Gel′fand, D. A. Raĭkov, and G. E. Šilov, Commutative normed rings, Uspehi Matem. Nauk (N. S.) 1 (1946), no. 2(12), 48–146 (Russian). MR 0027130
• [IV] D. Mil′man, Characteristics of extremal points of regularly convex sets, Doklady Akad. Nauk SSSR (N.S.) 57 (1947), 119–122 (Russian). MR 0022313

Bibliography

[I]

L. H. Loomis, An introduction to abstract harmonic analysis, New York, 1953. MR 0054173 (14:883c)

[II]

G. Szegö, Über die Randwerte einer analytischen Funktion, Math. Ann. vol. 84 (1921) pp. 232-244. MR 1512033

[III]

I. Gelfand, D. Raikov, and G. Šilov, Commutative normed rings, Uspehi Matematiceskih Nauk N.S. vol. 2 (1946) pp. 48-146. (In Russian). MR 0027130 (10:258a)

[IV]

D. Milman, Characteristics of extremal points of regularly compact sets, Doklady Akademia Nauk SSSR N.S. vol. 57 (1947) pp. 119-122 (In Russian); Mathematical Reviews vol. 9 (1948) p. 192. MR 0022313 (9:192d)