@article{gandomi2023variable,
  title={Variable functioning and its application to large scale steel frame design optimization},
  author={Gandomi, Amir H and Deb, Kalyanmoy and Averill, Ronald C and Rahnamayan, Shahryar and Omidvar, Mohammad Nabi},
  journal={Structural and Multidisciplinary Optimization},
  volume={66},
  number={1},
  pages={13},
  year={2023},
  publisher={Springer}
}