Zetra Y, Batari NP, Firdausya TF, Firdausa YA, Putri RB, Burhan RP, et al. 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. AE [Internet]. 2026 May 14 [cited 2026 Sep. 16];9(1):238-56. Available from: https://journal.unimma.ac.id/AutomotiveExperiences/article/view/15860