1. Regan, Helen, 21 of the world's 30 cities with the worst air pollution are in India“, CNN. Retrieved 2020-02-26.
2. Performance and emission evaluation of biodiesel fueled diesel engine abetted with exhaust gas recirculation and Ni coated catalytic converter;Subramaniam;J. Renew. Sustain. Energy,2013
3. Chirag M. Amin, Prof. Pravin P. Rathod, Prof. Jigish J. Goswami, Copper based catalytic converter”. Int. J. Eng. Res. Technol. (IJERT), 1(3), May - 2012 ISSN: 2278-0181.
4. Optimum design of manganese-coated copper catalytic converter to reduce carbon monoxide emissions on gasoline motor;Bagus;Procedia Environ. Sci.,2015
5. P.V. Walke, Dr. N. V. Deshpande, A.K. Mahalle, Emission characteristics of a compression ignition engine using different catalyst, in: Proceedings of the World Congress on Engineering 2008 Vol II WCE 2008, July 2 - 4, 2008, London, U.K.