Azer Bestavros Spyridon Braoudakis Value-cognizant Speculative Concurrency Control for Real-Time Databases. 75-101 1996 21 Inf. Syst. 1 db/journals/is/is21.html#BestavrosB96 http://dx.doi.org/10.1016/S0306-4379(96)00005-1