Zetra, Yulfi, Nirmala Puteri Batari, Talitha Fitra Firdausya, Yunita Alfiyati Firdausa, Rizka Berliana Putri, R.Y. Perry Burhan, and Yuly Kusumawati. “Synthesis of 2-Hidroxyethyl Ester (2-HEE) and 2-Hydroxypropyl Ester (2-HPE) from Castor Oil As Bioadditives to Improve the Cold Flow Characteristic of Biodiesel”. Automotive Experiences 9, no. 1 (May 14, 2026): 238–256. Accessed September 16, 2026. https://journal.unimma.ac.id/AutomotiveExperiences/article/view/15860.