%0 Conference Paper %B Proceedings of the 24th ACM SIGPLAN conference companion on Object oriented programming systems languages and applications %D 2009 %T Provenance: a future history %A Cheney, James %A Stephen Chong %A Foster, Nate %A Seltzer, Margo %A Vansummeren, Stijn %B Proceedings of the 24th ACM SIGPLAN conference companion on Object oriented programming systems languages and applications %I ACM %P 957–964 %G eng