Jasmin, F., Handayani, A. I. J. and Akmal, T. (2025) “Optimization of Extraction Parameters for Phenolics and Flavonoids from Peony (Paeonia lactiflora) Flowers Using Ultrasound-Assisted Extraction”, Hydrogen: Jurnal Kependidikan Kimia, 13(1), pp. 1–11. doi: 10.33394/hjkk.v13i1.14346.