فهرس المقالات Ali Ayati المقاله 1 - Tungstophosphoric acid embedded magnetic chitosan as a green catalyst for the synthesis of N-cyclohexyl-3-aryl quinoxaline-2-amines Ali Ayati Mansoureh Daraie Majid Heravi Bahareh Tanhaei Iranian Journal of Catalysis , العدد 4 , السنة 7 , تابستان 2017