@article{1029001362, author = {Akiba, Tadatoshi}, title = {Homotopy groups of $E(S^n,S^{n+r})$.}, journal = {Michigan Math. J.}, volume = {21}, number = {3}, year = {1975}, pages = { 371-376}, language = {en}, url = {http://dml.mathdoc.fr/item/1029001362} }
Akiba, Tadatoshi. Homotopy groups of $E(S^n,S^{n+r})$.. Michigan Math. J., Tome 21 (1975) no. 3, pp. 371-376. http://gdmltest.u-ga.fr/item/1029001362/