@INPROCEEDINGS{4983076,  author={Deb, Kalyanmoy and Sinha, Ankur},  booktitle={2009 IEEE Congress on Evolutionary Computation},   title={Constructing test problems for bilevel evolutionary multi-objective optimization},   year={2009},  volume={},  number={},  pages={1153-1160},  doi={10.1109/CEC.2009.4983076}}