@article{1029000468, author = {Brumfiel, G.}, title = {The homotopy groups of $BPL$ and $PL/O$. III.}, journal = {Michigan Math. J.}, volume = {17}, number = {1}, year = {1970}, pages = { 217-224}, language = {en}, url = {http://dml.mathdoc.fr/item/1029000468} }
Brumfiel, G. The homotopy groups of $BPL$ and $PL/O$. III.. Michigan Math. J., Tome 17 (1970) no. 1, pp. 217-224. http://gdmltest.u-ga.fr/item/1029000468/