Unfortunately the paper seems well hidden away behind Elsevier's paywall. But I noticed there's another 2008 paper by some of the same authors on the same topic

Unfortunately the paper seems well hidden away behind Elsevier's paywall. But I noticed there's another 2008 paper by some of the same authors on the same topic: http://sws.bu.edu/marchant/Dave_FullText_Papers/Kadish_Icarus_2008.pdf http://sws.bu.edu/marchant/Dave_FullText_Papers/Kadish_Icaru...