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@article{JRAM_1996__470_153780, author = {W. Hansen and N. Nadirashvili}, title = {Restricted mean value property for positive functions.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {89--108}, publisher = {mathdoc}, volume = {470}, year = {1996}, zbl = {0837.31001}, url = {http://geodesic.mathdoc.fr/item/JRAM_1996__470_153780/} }
W. Hansen; N. Nadirashvili. Restricted mean value property for positive functions.. Journal für die reine und angewandte Mathematik, Tome 470 (1996), pp. 89-108. http://geodesic.mathdoc.fr/item/JRAM_1996__470_153780/