R. Annisa, T. Jati Dharma, R. Mutiah, and S. Nurjannah, “Antioxidants Activity of Self-Nanoemulsifying Drug Delivery System on Dayak Onions Extract (Eleutherine palmifolia) using DPPH (2,2 difenil-1- picrylhydrazyl) Method”, J. Trop. Pharm. Chem., vol. 5, no. 4, pp. 396–405, Dec. 2021.