@article{JRAM_1929__161_149702,
     author = {O. Gruder},
     title = {\"Uber symmetrische {Grundfunktionen} nat\"urlicher {Zahlen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {152--178},
     publisher = {mathdoc},
     volume = {161},
     year = {1929},
     zbl = {55.0094.03},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1929__161_149702/}
}