@article{IM_1974__23_142252,
     author = {Per Tomter},
     title = {Transformation {Groups} on {Cohomology} {Product} of {Spheres.}},
     journal = {Inventiones mathematicae},
     pages = {79--88},
     publisher = {mathdoc},
     volume = {23},
     year = {1974},
     zbl = {0268.57020},
     url = {http://geodesic.mathdoc.fr/item/IM_1974__23_142252/}
}