@article{1255632705, author = {Eckmann, B. and Klmlsli, H.}, title = {Algebraic homotopy groups and Frobenius algebras}, journal = {Illinois J. Math.}, volume = {6}, number = {1}, year = {1962}, pages = { 533-552}, language = {en}, url = {http://dml.mathdoc.fr/item/1255632705} }
Eckmann, B.; Klmlsli, H. Algebraic homotopy groups and Frobenius algebras. Illinois J. Math., Tome 6 (1962) no. 1, pp. 533-552. http://gdmltest.u-ga.fr/item/1255632705/