David Taniar Rebecca Boon-Noi Tan Clement H. C. Leung Kevin H. Liu Performance analysis of "Groupby-After-Join" query processing in parallel database systems. 25-50 2004 168 Inf. Sci. 1-4 http://dx.doi.org/10.1016/j.ins.2003.09.029 db/journals/isci/isci168.html#TaniarTLL04