Kiran-Kumar Muniswamy-Reddy David A. Holland Causality-Based Versioning. 15-28 2009 FAST http://www.usenix.org/events/fast09/tech/full_papers/muniswamy-reddy/muniswamy-reddy.pdf conf/fast/2009 db/conf/fast/fast2009.html#Muniswamy-ReddyH09