List of Articles Z-Numbers Open Access Article Abstract Page Full-Text 1 - A Four-Step Approach to Ranking Z-numbers Sedigheh Hosseini Somayeh Ezadi Open Access Article Abstract Page Full-Text 2 - Estimating the Option Pricing of Currency Market Exchanges Using the Adaptive Neural-Fuzzy Network Method with Z-Valuation Language Variables Abbasali Abounoori M Matinfar اصغر سیفی