@article{ELMA_1959__14_140692,
     author = {W. Sierpinski},
     title = {Sur les ensembles de points aux distances rationnelles situ\'es sur un cercle.},
     journal = {Elemente der Mathematik},
     pages = {25--27},
     publisher = {mathdoc},
     volume = {14},
     year = {1959},
     zbl = {0085.27302},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1959__14_140692/}
}