An elementary proof of the Theorem of Beckmann and Quarles.
Benz, Walter
Elemente der Mathematik, Tome 42 (1987), p. 4-9 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1987-01-01
EUDML-ID : urn:eudml:doc:141394 
@article{GDZPPN002081598,
     title = {An elementary proof of the Theorem of Beckmann and Quarles.},
     journal = {Elemente der Mathematik},
     volume = {42},
     year = {1987},
     pages = {4-9},
     zbl = {0701.51013},
     url = {http://dml.mathdoc.fr/item/GDZPPN002081598}
}

Benz, Walter. An elementary proof of the Theorem of Beckmann and Quarles.. Elemente der Mathematik, Tome 42 (1987) pp. 4-9. http://gdmltest.u-ga.fr/item/GDZPPN002081598/