Piotr Faliszewski, Edith Hemaspaandra, Lane A. Hemaspaandra, Jörg Rothe. Llull and Copeland Voting Broadly Resist Bribery and Control. In Proceedings of the Twenty-Second AAAI Conference on Artificial Intelligence, July 22-26, 2007, Vancouver, British Columbia, Canada. pages 724-730, AAAI Press, 2007.