فهرس المقالات Rahmatolah mohammadipour المقاله 1 - Using Contingency Approach to Improve Firms’ Financial Performance Forecasts 10.22034/amfa.2020.1886008.1345 Saman Mousanezhad Esfandyar Mohammadi Rahmatolah Mohammadipour Farshad Sabzalipour Advances in Mathematical Finance and Applications , العدد 2 , السنة 6 , بهار 2021