Edward Hung David Wai-Lok Cheung Ben Kao Optimization in Data Cube System Design. 17-45 2004 23 J. Intell. Inf. Syst. 1 http://www.springerlink.com/index/10.1023/B:JIIS.0000029669.16825.54 db/journals/jiis/jiis23.html#HungCK04