Trinovita, Elsa, Regina Valencia, Herlina Eka Shinta, Angeline Novia Toemon, & Ysrafil Ysrafil.
" Evaluation of combination patch of vetel leaf extract (Piper sp.) - ultrasonic assisted extraction (UAE) as a transdermal delivery system on fibroblast cell formation and collagen density." <em>JURNAL ILMU KEFARMASIAN INDONESIA</em> [Online], 23.1 (2025): 198-210. Web. 14 May. 2025