@incollection{AST_1984__113-114__109_0,
     author = {Halperin, Stephen},
     title = {The structure of $\pi_* (\Omega S)$},
     booktitle = {Homotopie alg\'ebrique et alg\`ebre locale},
     series = {Ast\'erisque},
     pages = {109--117},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {113-114},
     year = {1984},
     zbl = {0546.55014},
     mrnumber = {749046},
     language = {en},
     url = {http://www.numdam.org/item/AST_1984__113-114__109_0/}
}