@booklet {cavallo10,
	title = {Efficient Mechanisms with Dynamic Populations and Dynamic Types},
	year = {2010},
	publisher = {Harvard University},
	url = {http://econcs.seas.harvard.edu/files/econcs/files/cps-persistent.pdf},
	author = {Ruggiero Cavallo and David C. Parkes and Satinder Singh}
}
