@article{GDZPPN002064502, title = {A Stiefel complex for the orthogonal group of a field.}, journal = {Commentarii mathematici Helvetici}, volume = {57}, year = {1982}, pages = {11-21}, zbl = {0506.20018}, url = {http://dml.mathdoc.fr/item/GDZPPN002064502} }
Vogtmann, K. A Stiefel complex for the orthogonal group of a field.. Commentarii mathematici Helvetici, Tome 57 (1982) pp. 11-21. http://gdmltest.u-ga.fr/item/GDZPPN002064502/