@incollection{AST_1984__113-114__109_0, author = {Halperin, Stephen}, title = {The structure of $\Pi_\star (\Omega S)$}, booktitle = {Homotopie alg\'ebrique et alg\`ebre locale}, author = {Collectif}, series = {Ast\'erisque}, publisher = {Soci\'et\'e math\'ematique de France}, number = {113-114}, year = {1984}, mrnumber = {749046}, zbl = {0546.55014}, language = {en}, url = {http://www.numdam.org/item/AST_1984__113-114__109_0/} }