Hub location problems: A review of models, classification, solution techniques, and applications. - Reza Zanjirani Farahani; Masoud Hekmatfar; Alireza Boloori Arabani; Ehsan Nikbakhsh (Comput. Ind. Eng., 2013)

Hierarchical facility location problem: Models, classifications, techniques, and applications. - Reza Zanjirani Farahani; Masoud Hekmatfar; Behnam Fahimnia; Narges Kazemzadeh (Comput. Ind. Eng., 2014)