@INPROCEEDINGS{4424735,  author={Deb, Kalyanmoy and Kumar, Abhay},  booktitle={2007 IEEE Congress on Evolutionary Computation},   title={Light beam search based multi-objective optimization using evolutionary algorithms},   year={2007},  volume={},  number={},  pages={2125-2132},  doi={10.1109/CEC.2007.4424735}}