@article{GDZPPN002060787,
title = {A Definition of Exotic Characteristic Classes of Spherical Fibrations},
journal = {Commentarii mathematici Helvetici},
volume = {47},
year = {1972},
pages = {421-436},
zbl = {0258.55008},
url = {http://dml.mathdoc.fr/item/GDZPPN002060787}
}
Ravenel, Douglas C. A Definition of Exotic Characteristic Classes of Spherical Fibrations. Commentarii mathematici Helvetici, Tome 47 (1972) pp. 421-436. http://gdmltest.u-ga.fr/item/GDZPPN002060787/