@INPROCEEDINGS{6252955,  author={Datta, Rituparna and Deb, Kalyanmoy},  booktitle={2012 IEEE Congress on Evolutionary Computation},   title={An adaptive normalization based constrained handling methodology with hybrid bi-objective and penalty function approach},   year={2012},  volume={},  number={},  pages={1-8},  doi={10.1109/CEC.2012.6252955}}