On the mean-value property of superharmonic functions
Annales Polonici Mathematici 93 (2008), 85-90 MSC: Primary 31B05. DOI: 10.4064/ap93-1-7
We complement a previous result concerning a converse of the mean-value property for smooth superharmonic functions. The case of harmonic functions was treated by Kuran and an improvement was given by Armitage and Goldstein.