@article{CMH_1975__50_139625,
     author = {I. Madsen and Milgram J.},
     title = {The {Universal} {Smooth} {Surgery} {Class.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {281--310},
     publisher = {mathdoc},
     volume = {50},
     year = {1975},
     zbl = {0328.55011},
     url = {http://geodesic.mathdoc.fr/item/CMH_1975__50_139625/}
}