@article{IM_1982__68_142936,
     author = {William Pardon and W.-c. Hsiang},
     title = {When are {Topologically} {Equivalent} {Orthogonal} {Transformations} {Linearly} {Equivalent?}},
     journal = {Inventiones mathematicae},
     pages = {275--316},
     publisher = {mathdoc},
     volume = {68},
     year = {1982},
     zbl = {0505.57016},
     url = {http://geodesic.mathdoc.fr/item/IM_1982__68_142936/}
}