@article{10_4064_aa_16_2_111_122,
     author = {Ekkehard Kr\"atzel},
     title = {Mittlere {Darstellungen} nat\"urlicher {Zahlen} als {Differenz} zweier k-ter {Potenzen}},
     journal = {Acta Arithmetica},
     pages = {111--122},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {1969},
     doi = {10.4064/aa-16-2-111-122},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-16-2-111-122/}
}