@Article{	  bbtz2013a,
author={D. Brockhoff and J. Bader and L. Thiele and E. Zitzler},
title={{Directed Multiobjective Optimization Based on the Hypervolume Indicator}},
journal={Journal of Multi-Criteria Decision Analysis},
publisher={Wiley},
year={2013},
pages={291–-317},
doi={10.1002/mcda.1502},
volume={20},
issue={5--6}
}