@article{ELMA_1956__11_140648,
     author = {J.-P. Sydler},
     title = {Sur les t\'etra\`edres \'equivalents \`a un cube.},
     journal = {Elemente der Mathematik},
     pages = {78--81},
     publisher = {mathdoc},
     volume = {11},
     year = {1956},
     zbl = {0071.36303},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1956__11_140648/}
}