@article{PMIHES_1974__43__245_0, author = {Chatelet, Gilles and Rosenberg, Harold}, title = {Manifolds which admit $\mathbf {R}^n$ actions}, journal = {Publications Math\'ematiques de l'IH\'ES}, pages = {245--260}, publisher = {Institut des Hautes \'Etudes Scientifiques}, volume = {43}, year = {1974}, zbl = {0305.57031}, mrnumber = {49 #11532}, language = {en}, url = {http://www.numdam.org/item/PMIHES_1974__43__245_0/} }