@article{GDZPPN002063948, title = {Tangential homotopy equivalences.}, journal = {Commentarii mathematici Helvetici}, volume = {55}, year = {1980}, pages = {445-484}, zbl = {0451.57018}, url = {http://dml.mathdoc.fr/item/GDZPPN002063948} }
Madsen, I.; Taylor, L.R.; Williams, B. Tangential homotopy equivalences.. Commentarii mathematici Helvetici, Tome 55 (1980) pp. 445-484. http://gdmltest.u-ga.fr/item/GDZPPN002063948/