Kusuma, S., H. S. . Kasjono, and Yamtana. “The The Use of Rice Husk Ash, Saw Dust and Coconut Fiber (CASE2SK) in a Diesel Engine at Sawmill Industry”. Sanitasi: Jurnal Kesehatan Lingkungan, vol. 14, no. 2, June 2022, pp. 100-7, doi:10.29238/sanitasi.v14i2.1246.