@article{ELMA_1960__15_140715,
     author = {J.-P. Sydler},
     title = {Exemples de t\'etra\`edres \'equivalents (mod. 0).},
     journal = {Elemente der Mathematik},
     pages = {97--99},
     publisher = {mathdoc},
     volume = {15},
     year = {1960},
     zbl = {0089.37301},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1960__15_140715/}
}