Kris Bubendorfer Ian Welch Blayne Chard Trustworthy Auctions for Grid-Style Economies. 386-390 2006 conf/ccgrid/2006 CCGRID http://doi.ieeecomputersociety.org/10.1109/CCGRID.2006.107 db/conf/ccgrid/ccgrid2006.html#BubendorferWC06