E. Demaine, A. López-Ortiz, und J. Munro. SODA '00: Proceedings of the eleventh annual ACM-SIAM symposium on Discrete algorithms, Seite 743--752. Philadelphia, PA, USA, Society for Industrial and Applied Mathematics, (2000)
H. Iben, J. O'Brien, und E. Demaine. Proceedings of the twenty-second annual symposium on Computational geometry, Seite 71--79. New York, NY, USA, ACM, (2006)