@article{IM_1971__12_142064,
     author = {W. Hsiang},
     title = {On the {Geometric} {Weight} {System} of {Differentiable} {Compact} {Transformation} {Groups} on {Acyclic} {Manifolds.}},
     journal = {Inventiones mathematicae},
     pages = {35--47},
     publisher = {mathdoc},
     volume = {12},
     year = {1971},
     zbl = {0217.49401},
     url = {http://geodesic.mathdoc.fr/item/IM_1971__12_142064/}
}