@article{ELMA_1963__18_140766,
     author = {W. Sierpinski},
     title = {Trois nombres t\'etra\'edraux en progression arithm\'etique.},
     journal = {Elemente der Mathematik},
     pages = {54--55},
     publisher = {mathdoc},
     volume = {18},
     year = {1963},
     zbl = {0112.27003},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1963__18_140766/}
}