A. B. Nur, S. P. J. Negara, A. Fudhail, and Muharram, “Synthesis and Characterization of Polyeugenol from Clove Leaf Oil (Syzygium aromaticum)-Derived Eugenol Using a Nitric Acid Catalyst”, FJST, vol. 5, no. 10, pp. 2787–2804, Oct. 2026.