@article{MOMA_1948__52_176789,
     author = {E. Bompiani},
     title = {Monoidi del 3... ordine per una calotta superficilae del 4... ordine.},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {190--193},
     publisher = {mathdoc},
     volume = {52},
     year = {1948},
     zbl = {0031.27102},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1948__52_176789/}
}