An optimal solution for dynamic polar diagram. - Ebrahim Ehsanfar; Bahram Sadeghi Bigham; Najmeh Madadi (CCCG, 2010)

A Reactive-Periodic Hybrid Optimization for Internal Hospital Logistics. - Ebrahim Ehsanfar; Farzaneh Karami; Tim Kerkenhoff (ICCL, 2023)