Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1964__39_139287, author = {Ernst Alfred Ruh}, title = {On teh {Automorphism} group of a {G-structure.}}, journal = {Commentarii mathematici Helvetici}, pages = {189--204}, publisher = {mathdoc}, volume = {39}, year = {1964}, url = {http://geodesic.mathdoc.fr/item/CMH_1964__39_139287/} }
Ernst Alfred Ruh. On teh Automorphism group of a G-structure.. Commentarii mathematici Helvetici, Tome 39 (1964), pp. 189-204. http://geodesic.mathdoc.fr/item/CMH_1964__39_139287/