@article{IM_1971__13_142092,
     author = {T. tom Dieck},
     title = {Characteristic {Numbers} of {G-Manifolds.} {I.}},
     journal = {Inventiones mathematicae},
     pages = {213--224},
     publisher = {mathdoc},
     volume = {13},
     year = {1971},
     zbl = {0216.45403},
     url = {http://geodesic.mathdoc.fr/item/IM_1971__13_142092/}
}