@article{CMH_1979__54_139794,
     author = {E.H., Jr. Brown and F.P. Peterson},
     title = {A universal space for normal bundles of n-manifolds.},
     journal = {Commentarii mathematici Helvetici},
     pages = {405--430},
     publisher = {mathdoc},
     volume = {54},
     year = {1979},
     zbl = {0415.55011},
     url = {http://geodesic.mathdoc.fr/item/CMH_1979__54_139794/}
}