%0 Journal Article %A Jensen, Gerd %A Pommerenke, Christian %T On the Structure of the Schild Group in Relativity Theory %J Canadian mathematical bulletin %D 2017 %P 774-790 %V 60 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2016-084-8/ %R 10.4153/CMB-2016-084-8 %F 10_4153_CMB_2016_084_8