List of Articles GEM Open Access Article Abstract Page Full-Text 1 - Natural Classes of Vowels in Persian Language Aliyeh Kord Zafaranlu kambuzia بهرام هادیان Open Access Article Abstract Page Full-Text 2 - The Role of Culture in Entrepreneurial Alertness in Iran Based on GEM Data Ehsan Mehraban Sabina Nobary Open Access Article Abstract Page Full-Text 3 - Sedimentary coppers as gemstone: a case study of copper mineralization in the alluvial sediments of the southern plain of Rafsanjan H. Zand-Moghadam Amir hossein Tahernia H. Ahmadipour