Viqhi, A. V., Manggau, M. A., Sartini, S., Wahyudin, E., Rahman, L., Yulianti, R., Permana, A. D., & Awal, S. A. (2021). Development of Propolis (Apis trigona)-loaded Nanoemulgel for Improved Skin Penetration of Caffeic Acid: The Effect of Variation of Oleic Acid Concentration. Open Access Macedonian Journal of Medical Sciences, 9(B), 1264–1278. https://doi.org/10.3889/oamjms.2021.6672