@conference {Seuken_netecon11, title = {On the Sybil-Proofness of Accounting Mechanisms}, booktitle = {Proceedings of the 6th Workshop on the Economics of Networks, Systems, and Computation (NetEcon{\textquoteright}11)}, year = {2011}, url = {http://econcs.seas.harvard.edu/files/econcs/files/seuken_netecon11.pdf}, author = {Sven Seuken and David C. Parkes} }