@article{1029001204, author = {Kahn, Donald W.}, title = {Obstruction theory in the stable range.}, journal = {Michigan Math. J.}, volume = {20}, number = {4}, year = {1974}, pages = { 19-26}, language = {en}, url = {http://dml.mathdoc.fr/item/1029001204} }
Kahn, Donald W. Obstruction theory in the stable range.. Michigan Math. J., Tome 20 (1974) no. 4, pp. 19-26. http://gdmltest.u-ga.fr/item/1029001204/