Anastasios Gounaris Jim Smith Norman W. Paton Rizos Sakellariou Alvaro A. A. Fernandes Paul Watson Adaptive workload allocation in query processing in autonomous heterogeneous environments. 125-164 2009 25 Distributed and Parallel Databases 3 http://dx.doi.org/10.1007/s10619-008-7032-5 db/journals/dpd/dpd25.html#GounarisSPSFW09