@article{CMH_1948__21_138932,
     author = {Lothar Koschmieder},
     title = {Eigenschaften harmonischer {Reihen} mit zeichenfester {Summe} in {R\"aumen} h\"oherer {Stufenzahl.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {44--57},
     publisher = {mathdoc},
     volume = {21},
     year = {1948},
     zbl = {0029.39802},
     url = {http://geodesic.mathdoc.fr/item/CMH_1948__21_138932/}
}