@article{MAN_1985__271_163989,
     author = {Henri Buchwalter},
     title = {Formes quadratiques sur un semi-groupe involutif.},
     journal = {Mathematische Annalen},
     pages = {619--640},
     publisher = {mathdoc},
     volume = {271},
     year = {1985},
     zbl = {0547.39002},
     url = {http://geodesic.mathdoc.fr/item/MAN_1985__271_163989/}
}