Berlyanto Dwi Arrokhman and Ratna Monasari, “ANALYSIS OF THE EFFECT OF EXHAUST RESONATOR DIAMETER AND MATERIAL ON EXHAUST EMISSIONS AND NOISE LEVEL OF 1000 CC ENGINE: PENGARUH DIAMETER DAN BAHAN RESONATOR KNALPOT TERHADAP EMISI GAS BUANG DAN TINGKAT KEBISINGAN MESIN 1000 CC”, J-MEEG, vol. 2, no. 1, pp. 162–169, May 2023.