@article{JRAM_1940__182_150091, author = {P. Hall}, title = {On groups of automorphisms.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {194--204}, publisher = {mathdoc}, volume = {182}, year = {1940}, zbl = {66.0076.03}, url = {http://geodesic.mathdoc.fr/item/JRAM_1940__182_150091/} }