List of Articles Grey Model Open Access Article Abstract Page Full-Text 1 - Measurement of Bitcoin Daily and Monthly Price Prediction Error Using Grey Model, Back Propagation Artificial Neural Network and Integrated model of Grey Neural Network Mahdi Madanchi Zaj Mohammad Ebrahim Samavi Emad Koosha 10.22034/amfa.2020.1881110.1315 Open Access Article Abstract Page Full-Text 2 - Forecast of climatologically events using improved grey model (Case Study: Qazvin Province Climatology) Maryam Karimi Khajehghiasi Alireza Alinezhad