Cupu, D. R. P., Abral, H., Gasni, D., Fuadi, Z., Paiman, Z., Quan, C. W., & Osman, K. (2026). Friction performance of palm oil-based trimethylolpropane ester containing bacterial cellulose and sorbitan monostearate: A Taguchi-based study. Teknomekanik, 9(3), 361-377. https://doi.org/10.24036/teknomekanik.v9i3.59272