TY - JOUR AU - Radmannejad, Hamid reza AU - Mohammad Pourzarandi, Mohammad Ebrahim AU - Minouei, Mehrzad TI - Designing a Credit Risk Management Model in the Network of after-sales service companies Using Financial Components of After-Sales Services and Metaheuristic Algorithms (Case study: Saipa's after-sales service company(Saipa Yadak)) JO - Financial Engineering and Portfolio Management VL - 12 IS - 48 SP - 253 EP - 273 PY - 2021 DO - ER -