Abbaspour-Gilandeh, Esmayeel, Azimi, Seyyedeh Cobra. Brønsted acidic ionic liquid ([BMIm]HSO4) as an efficient catalysts for the one-pot synthesis of 2H-indazolo[2,1-b]phthalazine-trione derivatives. Iranian Journal of Catalysis. 2014;4(3):175-180. doi: