@article {22091,
	title = {Perspectives on modeling hub location problems},
	journal = {European Journal of Operational Research},
	volume = {291},
	year = {2021},
	pages = {1-17},
	url = {https://doi.org/10.1016/j.ejor.2020.09.039},
	author = {Alumur, S.A. and Campbell, J.F. and Contreras, I. and Kara, B.Y. and Marianov, V. and O{\textquoteright}Kelly, M.E.}
}