Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1945__18_138872, author = {Gerhard Stohler}, title = {\"Uber eine {Klasse} von einparametrigen {Differential-Transformationsgruppen.}}, journal = {Commentarii mathematici Helvetici}, pages = {76--121}, publisher = {mathdoc}, volume = {18}, year = {1945}, zbl = {0061.20707}, url = {http://geodesic.mathdoc.fr/item/CMH_1945__18_138872/} }
Gerhard Stohler. Über eine Klasse von einparametrigen Differential-Transformationsgruppen.. Commentarii mathematici Helvetici, Tome 18 (1945), pp. 76-121. http://geodesic.mathdoc.fr/item/CMH_1945__18_138872/