فهرس المقالات Mona Hosseini-sarvari المقاله 1 - Synthesis of 4-(trifluoromethyl) coumarins using nano sulfated-titania as solid acid catalyst under solvent-free conditions Mona Hosseini-Sarvari Sepideh Najafvand-Derikvandi Iranian Journal of Catalysis , العدد 5 , السنة 6 , زمستان 2016