فهرس المقالات maryam haghighi المقاله 1 - Nano TiO2@SiO2 as an efficient and reusable catalyst for the synthesis of multi-substituted imidazoles Maryam Haghighi Kobra Nikoofar Iranian Journal of Catalysis , العدد 1 , السنة 5 , زمستان 2015