@article{GDZPPN002415879, title = {Higher Torsion in SG and BSG.}, journal = {Mathematische Zeitschrift}, volume = {142}, year = {1975}, pages = {55-80}, zbl = {0322.55030}, url = {http://dml.mathdoc.fr/item/GDZPPN002415879} }
Madsen, Ib. Higher Torsion in SG and BSG.. Mathematische Zeitschrift, Tome 142 (1975) pp. 55-80. http://gdmltest.u-ga.fr/item/GDZPPN002415879/