@Article{	  bfhk2009a,
author={D. Brockhoff and T. Friedrich and N. Hebbinghaus and C. Klein and F. Neumann and E. Zitzler},
title={{On the Effects of Adding Objectives to Plateau Functions}},
journal={IEEE Transactions on Evolutionary Computation},
year={2009},
volume={13},
number={3},
pages={591--603},
doi={10.1109/TEVC.2008.2009064}
}