@article{1183535003, author = {Petrie, Ted}, title = {Smooth $S^1$ actions and bilinear forms}, journal = {Bull. Amer. Math. Soc.}, volume = {79}, number = {5}, year = {1973}, pages = { 1056-1059}, language = {en}, url = {http://dml.mathdoc.fr/item/1183535003} }
Petrie, Ted. Smooth $S^1$ actions and bilinear forms. Bull. Amer. Math. Soc., Tome 79 (1973) no. 5, pp. 1056-1059. http://gdmltest.u-ga.fr/item/1183535003/