@conference {parkes02yy,
	title = {Challenge Problem: Agent-Mediated Decentralized Information Mechanisms},
	booktitle = {Proc. AAMAS{\textquoteright}02 Workshop on AgentCities: Challenges in Open Agent Environments},
	year = {2002},
	address = {Bologna, Italy},
	url = {http://econcs.seas.harvard.edu/files/econcs/files/agentcities.pdf},
	author = {David C. Parkes}
}
