@article{1195525962, author = {Ishikawa, Osamu}, title = {On the characterization of the harmonic functions}, journal = {Proc. Japan Acad.}, volume = {30}, number = {10}, year = {1954}, pages = { 686-690}, language = {en}, url = {http://dml.mathdoc.fr/item/1195525962} }
Ishikawa, Osamu. On the characterization of the harmonic functions. Proc. Japan Acad., Tome 30 (1954) no. 10, pp. 686-690. http://gdmltest.u-ga.fr/item/1195525962/