List of Articles Multigroup Open Access Article Abstract Page Full-Text 1 - Multiset relations and multigroups under tn-norm Hossein Naraghi Saeed Mirvakili Peyman Ghiasvand Open Access Article Abstract Page Full-Text 2 - Cross-Group Invariance of Factorial Structure of the Identity Style Inventory among Iranian Adolescents Mahnaz Aliakbari Dehkordi Ali Khodaei Omid Shokri Zohreh Daneshvarpoor