Hemant K. Bhargava Juan Feng Pure Bundling Better than Mixed? Or, Why doesn?t AOL Offer Standardized Dial-Up Service? 2004 HICSS http://csdl.computer.org/comp/proceedings/hicss/2004/2056/08/205680213aabs.htm db/conf/hicss/hicss2004-8.html#BhargavaF04