Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1969__1_153977, author = {Karl-Heinz Helwig}, title = {Involutionen von {Jordan-Algebren.}}, journal = {Manuscripta mathematica}, pages = {211--230}, publisher = {mathdoc}, volume = {1}, year = {1969}, language = {de}, url = {http://geodesic.mathdoc.fr/item/MM2_1969__1_153977/} }
Karl-Heinz Helwig. Involutionen von Jordan-Algebren.. Manuscripta mathematica, Tome 1 (1969), pp. 211-230. http://geodesic.mathdoc.fr/item/MM2_1969__1_153977/