1. On means of subharmonic functions;Armitage;Czechoslovak Math. J.,1978
2. Éléments de la théorie classique du potentiel;Brelot,1969
3. Elementary Theory of Analytic Functions of One or Several Complex Variables;Cartan,1963
4. Classical Potential Theory and Its Probabilistic Counterpart;Doob,1983
5. An Introduction to Potential Theory;du Plessis,1970