Ira Cohen Steve Zhang Moisés Goldszmidt Julie Symons Terence Kelly Armando Fox Capturing, indexing, clustering, and retrieving system history. 105-118 2005 conf/sosp/2005 SOSP http://doi.acm.org/10.1145/1095810.1095821 db/conf/sosp/sosp2005.html#CohenZGSKF05