@conference {1293898,
	title = {When are Marginal Congestion Tolls Optimal?},
	booktitle = {Proceedings of the Ninth International Workshop on Agents in Traffic and Transportation (ATT 2016)  2016},
	year = {2016},
	url = {https://econcs.seas.harvard.edu/files/econcs/files/meir_att16.pdf},
	author = {Reshef Meir and David C. Parkes}
}
