Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS2_1978__42_166590, author = {K\"ate Fenchel}, title = {On a theorem of {Frobenius.}}, journal = {Mathematica Scandinavica}, pages = {243--250}, publisher = {mathdoc}, volume = {42}, year = {1978}, zbl = {0392.20015}, url = {http://geodesic.mathdoc.fr/item/MS2_1978__42_166590/} }
Käte Fenchel. On a theorem of Frobenius.. Mathematica Scandinavica, Tome 42 (1978), pp. 243-250. http://geodesic.mathdoc.fr/item/MS2_1978__42_166590/