“A Clinical Study on Anti-wrinkle Efficacy of a Cosmetics Containing Oligoarginine Conjugation of Palmitoyl-GHK peptide for Skin Penetrating” (2021) Turkish Journal of Computer and Mathematics Education (TURCOMAT), 12(5), pp. 401–406. Available at: https://turcomat.org/index.php/turkbilmat/article/view/974 (Accessed: 31 May 2026).