@article{MZ_1951__54_169206,
     author = {L. R\'edei},
     title = {Einfacher {Beweis} des quadratischen {Reziprozit\"atssatzes.}},
     journal = {Mathematische Zeitschrift},
     pages = {25--26},
     publisher = {mathdoc},
     volume = {54},
     year = {1951},
     zbl = {0042.03911},
     url = {http://geodesic.mathdoc.fr/item/MZ_1951__54_169206/}
}