@article{relationalgebraicandtoolsupportedcontrol,
  title = {Relation-algebraic and Tool-supported Control of Condorcet Voting},
  author = {Rudolf Berghammer and Henning Schnoor},
  year = {2013},
  eprint = {1304.7244},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1304.7244v1},
}