A. Budiyanto, “Antioxidant Activity of Ethanol Extract of Secang Wood (Caesalpinia sappan L.) and Its Effects on Cell Viability and Collagen Synthesis in Blue Light-Exposed Fibroblasts”, HAYATI J Biosci, vol. 33, no. 5, pp. 1312–1323, Aug. 2026, doi: 10.4308/hjb.33.5.1312-1323.