@article{JRAM_1927__157_149617,
     author = {Andreas Speiser},
     title = {Naturphilosophische {Untersuchungen} von {Euler} und {Riemann.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {105--114},
     publisher = {mathdoc},
     volume = {157},
     year = {1927},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1927__157_149617/}
}