@techreport{dattabi,
  title={A Bi-objective Constrained Optimization Methodology Using a Hybrid Multi-Objective and Penalty Function Approach},
  author={Datta, Rituparna and Deb, Kalyanmoy}
  institution={Computational Optimization and Innovation Laboratory, Michigan State University, East Lansing, MI-48824,
  USA},
  number={2015007},
  url={https://coin-lab.org/content/publications.html},
  year={2015}
}