@INPROCEEDINGS{4424855,  author={Kumar, Abhay and Sharma, Deepak and Deb, Kalyanmoy},  booktitle={2007 IEEE Congress on Evolutionary Computation},   title={A hybrid multi-objective optimization procedure using PCX based NSGA-II and sequential quadratic programming},   year={2007},  volume={},  number={},  pages={3011-3018},  doi={10.1109/CEC.2007.4424855}}