@article{ELMA_1948__3_140480,
     author = {Paul Rossier},
     title = {Esquisse d'une th\'eorie de l'\'equerre.},
     journal = {Elemente der Mathematik},
     pages = {49--51},
     publisher = {mathdoc},
     volume = {3},
     year = {1948},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1948__3_140480/}
}