@article{TRSPY_1934_5_a12,
     author = {A. Gelfond},
     title = {\"Uber die harmonischen {Funktionen}},
     journal = {Informatics and Automation},
     pages = {149--158},
     publisher = {mathdoc},
     volume = {5},
     year = {1934},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1934_5_a12/}
}