@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/