@inproceedings{CinaEndrissAAMAS2015, author = {Giovanni Cin\'a and Ulle Endriss}, title = {A Syntactic Proof of Arrow's Theorem in a Modal Logic of Social Choice Functions}, booktitle = {Proceedings of the 14th International Conference on Autonomous Agents and Multiagent Systems (AAMAS-2015)}, month = {May}, year = {2015} }