@article{MAN_1928__99_159252,
     author = {H. Geppert},
     title = {Zur {Theorie} des arithmetisch-geometrischen {Mittels}},
     journal = {Mathematische Annalen},
     pages = {162--180},
     publisher = {mathdoc},
     volume = {99},
     year = {1928},
     zbl = {54.0404.03},
     url = {http://geodesic.mathdoc.fr/item/MAN_1928__99_159252/}
}