M. V. S. Murali Krishna et al. 2022. An Experimental Study on Exhaust Emissions from Copper-coated Gasohol Run Spark Ignition Engine with Catalytic Converter . Innovations in Microbiology and Biotechnology Vol. 6. (Jun. 2022), 1–10. DOI:https://doi.org/10.9734/bpi/imb/v6/15036D.