@article{10_21136_CMJ_1973_101146,
     author = {Kr\"atzel, Ekkehard},
     title = {Mittlere {Darstellungen} nat\"urlicher {Zahlen} als {Summe} von $n$ $k$-ten {Potenzen}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {57--73},
     year = {1973},
     volume = {23},
     number = {1},
     doi = {10.21136/CMJ.1973.101146},
     mrnumber = {0321897},
     zbl = {0254.10037},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1973.101146/}
}