@article{1200773553, author = {Gilbert, Shirley and Zvengrowski, Peter}, title = {$S\sp1$-invariant homotopy of spheres}, journal = {Osaka J. Math.}, volume = {17}, number = {1}, year = {1980}, pages = { 603-617}, language = {en}, url = {http://dml.mathdoc.fr/item/1200773553} }
Gilbert, Shirley; Zvengrowski, Peter. $S\sp1$-invariant homotopy of spheres. Osaka J. Math., Tome 17 (1980) no. 1, pp. 603-617. http://gdmltest.u-ga.fr/item/1200773553/