Norliana-Izzati MR, Lee CT, Fauziah A, Zunoliza A, Ling SK, Mohd-Hafidz-Hadi A, Ng KKS, Ng CH, Tnah LH, Ng CL, Goh H-H, and Lee SL. “HPLC-PDA METHOD FOR THE QUANTIFICATION OF MITRAGYNINE IN FRESH KRATOM (<em>MITRAGYNA</em> <em>SPECIOSA</Em>) LEAF”. Journal of Tropical Forest Science (JTFS), vol. 36, no. 4, Nov. 2024, pp. 434-43, https://jtfs.frim.gov.my/jtfs/article/view/2967.