@PhdThesis{kotla08xbft, 
author = {R. Kotla}, 
 title = {{xBFT}: Byzantine Fault Tolerance with High Performance, Low COst, and Aggressive Fault Isolation}, 
 school = {University of Texas at Austin}, 
 year = 2008 , 
 month = May, 
 pdf = "http://www.cs.utexas.edu/users/dahlin/papers/xBFT-dissertation.pdf", 
 category = "byz" 
 }