Phothikanith, A., and K. J. Haller. “X-RAY STRUCTURAL CHARACTERIZATION OF DISORDERED EPIFRIEDELIN-3-OL AND FRIEDELIN -3-ONE”. Suranaree Journal of Science and Technology, vol. 12, no. 3, Aug. 2026, pp. 213-24, https://ph04.tci-thaijo.org/index.php/SUJST/article/view/13258.