@article{1029003237,
author = {James, David M.},
title = {Smooth $S^1$ actions on homotopy ${\bf C}{\rm P}^4$'s.},
journal = {Michigan Math. J.},
volume = {32},
number = {1},
year = {1985},
pages = { 259-266},
language = {en},
url = {http://dml.mathdoc.fr/item/1029003237}
}
James, David M. Smooth $S^1$ actions on homotopy ${\bf C}{\rm P}^4$'s.. Michigan Math. J., Tome 32 (1985) no. 1, pp. 259-266. http://gdmltest.u-ga.fr/item/1029003237/