H. S. Tira, M. Wirawan, S. Rahman, E. Sukjit, and S. Sudirman, “Performance of Adsorbent from Calcium Carbide Residue to Reduce Exhaust Emissions of Two-wheeler”, AE, vol. 6, no. 1, pp. 23–37, Jan. 2023, doi: 10.31603/ae.7827.