@article{1102735073,
author = {Joseph, Vappala J.},
title = {Smooth actions of the circle group on exotic spheres.},
journal = {Pacific J. Math.},
volume = {97},
number = {2},
year = {1981},
pages = { 323-336},
language = {en},
url = {http://dml.mathdoc.fr/item/1102735073}
}
Joseph, Vappala J. Smooth actions of the circle group on exotic spheres.. Pacific J. Math., Tome 97 (1981) no. 2, pp. 323-336. http://gdmltest.u-ga.fr/item/1102735073/