University of Tehran Iranian Economic Review 1026-6542 17 2 2013 05 01 A Fuzzy Logic Approach to Estimate the Import of Smuggling in Iran 107 129 53574 10.22059/ier.2013.53574 EN Mohammad Hossien Pourkazemi Mohammad Naser Sherafat Zahra Delfan Azari Journal Article 2015 05 20 https://ier.ut.ac.ir/article_53574_ac93b03679591a3f35fd83d1778624ec.pdf