@article {10428,
	title = {Multi-period hub network design problems with modular capacities},
	journal = {Annals of Operations Research},
	volume = {246},
	year = {2016},
	pages = {289-312},
	url = {https://link.springer.com/article/10.1007/s10479-015-1805-9},
	author = {Alumur, S.A. and Nickel, S. and Saldanha-da-Gama, F. and Secerdin, Y.}
}