@article{1183529101, author = {Singer, William M.}, title = {Connective fiberings over $BU$ and $U$}, journal = {Bull. Amer. Math. Soc.}, volume = {73}, number = {6}, year = {1967}, pages = { 897-898}, language = {en}, url = {http://dml.mathdoc.fr/item/1183529101} }
Singer, William M. Connective fiberings over $BU$ and $U$. Bull. Amer. Math. Soc., Tome 73 (1967) no. 6, pp. 897-898. http://gdmltest.u-ga.fr/item/1183529101/