@article{1256052831, author = {Wells, R.}, title = {Free Involutions of homotopy $S^{l} \times S^{l}$'s}, journal = {Illinois J. Math.}, volume = {15}, number = {4}, year = {1971}, pages = { 160-184}, language = {en}, url = {http://dml.mathdoc.fr/item/1256052831} }
Wells, R. Free Involutions of homotopy $S^{l} \times S^{l}$'s. Illinois J. Math., Tome 15 (1971) no. 4, pp. 160-184. http://gdmltest.u-ga.fr/item/1256052831/