Shirini, Farhad, Ghauri Koodehi, Tahereh, Goli-Jolodar, Omid (2017) ‘1,4-Disulfopiperazine-1,4-diium chloride ([Piper-(SO3H)2].2Cl) as an efficient ionic catalyst for synthesis of phthalazine derivatives’, Iranian Journal of Catalysis, 7(4), pp. 257-266. doi: