[1] ASH R. B.: Measure, Integration and Functional Analysis. Academic Press, New York and London 1972. MR 0435321 | Zbl 0249.28001

[2] BAUER H.: Harmonische Räume und ihre Potentialtheorie. Springer Verlag, Berlin 1966. MR 0210916 | Zbl 0142.38402

[3] CONSTANTINESCU C., CORNE A.: Potential Theory on Harmonic Spaces. Springer Verlag, New York 1972. MR 0419799

[4] FENTON P. C.: On sufficient conditions for harmonicity. Trans. Amer. Math, Soc. 253 (1979), 139-147. MR 0536939 | Zbl 0368.31001

[5] HEATH D.: Functions possessing restricted mean value properties. Proc. Amer. Math. Soc 41 (1973), 588-595. MR 0333213 | Zbl 0251.31004

[6] KELLOG O. D.: Converses of Gauss's theorem on the arithmetic mean. Trans. Amer. Math. Soc. 36 (1934), 227-242. MR 1501739

[7] LEBESGUE H.: Sur le problème de Dirichlet. C. R. Acad. Sci. Paris 154 (1912), 335-337.

[8] LEBESGUE H.: Sur le théorème de la moyenne de Gauss. Bull. Soc. Math, France 40 (1912), 16-17.

[9] NETUKA I.: Harmonic functions and the mean value theorems. (in Czech), Čas. pěst. mat. 100 (1975), 391-409. MR 0463461

[10] NETUKA I.: L'unicité du problème de Dirichlet généralisé pour un compact. in; Séminaire de Théorie du Potentiel Paris, No. 6, Lecture Notes in Mathematics 906, Springer Verlag, Berlin 1982, 269-281. MR 0663569 | Zbl 0481.31008

[11] ØKSENDAL B., STROOCK D. W.: A characterization of harmonic measure and Markov processes whose hitting distributions are preserved by rotations. translations and dilatations (preprint).

[12] VEECH W. A.: A converse to the mean value theorem for harmonic functions. Amer. J. Math. 97 (1976), 1007-1027. MR 0393521 | Zbl 0324.31002

[13] VESELÝ J.: Sequence solutions of the Dirichlet problem. Čas. pěst. mat. 106 (1981), 84-93. MR 0613711