@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/