Giesen, Joachim Algorithms and Complexity, MPI for Informatics, Max Planck Society;
Giesen, J., Mitsche, D., & Schuberth, E. (2007). Collaborative Ranking: An Aggregation Algorithm for Individuals' Preference Estimation. In M.-Y. Kao, & X.-Y. Li (Eds.), Algorithmic Aspects in Information and Management (pp. 58-67). Berlin: Springer. doi:10.1007/978-3-540-72870-2_6.