@article{ELMA_1961__16_140726,
     author = {Heinz Balmer},
     title = {Johann {Jakob} {Balmer.}},
     journal = {Elemente der Mathematik},
     pages = {49--60},
     year = {1961},
     volume = {16},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1961__16_140726/}
}