@article{RM_1981_36_5_a15,
     author = {A. A. Kosmodem'yanskii (Jr.)},
     title = {A~converse of the mean value theorem for harmonic functions},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {159--160},
     publisher = {mathdoc},
     volume = {36},
     number = {5},
     year = {1981},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1981_36_5_a15/}
}