@article{IM_1976__33_142379,
     author = {Sylvain E. Cappell},
     title = {On {Homotopy} {Invariance} of {Higher} {Signatures.}},
     journal = {Inventiones mathematicae},
     pages = {171--180},
     publisher = {mathdoc},
     volume = {33},
     year = {1976},
     zbl = {0335.57007},
     url = {http://geodesic.mathdoc.fr/item/IM_1976__33_142379/}
}