List of Articles Grey Number Open Access Article Abstract Page Full-Text 1 - A method for clustering customers using RFM model and grey numbers in terms of uncertainty azime mozafari Open Access Article Abstract Page Full-Text 2 - Introduction of a Robust Model in Order to Select Suppliers in Supply Chain: An Integration of AHP-Bull’s Eye-PAF Approach علی بنیادی نایینی mohammad hasan kamfiroozi