Majid M. Heravi, Hamideh Alinejhad, Fatemeh Derikvand, Hossein A. Oskooie, Bita Baghernejad, Fatemeh F. Bamoharram,
NH2SO3H and H6P2W18O62 · 18H2O-Catalyzed, Three-Component, One-Pot Synthesis of Benzo[c]acridine Derivatives Synthetic Communications. ,vol. 42, pp. 2033- 2039 ,(2012) ,
10.1080/00397911.2010.550704