Kalam Khan, Firoz, Pachpinde, Amol, Langade, Mallinath, Lohar, Kishan, Patange, Sunil, Bhusnure, Omprakash, Sangshetti, Jaiprakash. Pr3+ doped CoFe2O4: A highly efficient, magnetically recoverable and reusable catalyst for one-pot four-component synthesis of multisubstituted pyrroles. Iranian Journal of Catalysis. 2016;6(4):333-338.