@article{abouhawwash2015karush,
  title={Karush-Kuhn-Tucker optimality based local search for enhanced convergence of evolutionary multi-criterion optimization methods},
  author={Abouhawwash, Mohamed and Seada, Haitham and Deb, Kalyanmoy},
  journal={Comput. Oper. Res},
  year={2015}
}