On Tue, Aug 26, 2008 at 04:31:33PM -0700, John Meacham wrote: > http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.6.8816 Doh! wrong paper. http://portal.acm.org/citation.cfm?id=581690.581692 anyone have a free link? John -- John Meacham - ⑆repetae.net⑆john⑈