Mortazavi, Seyedeh Maryam, et al. “Synthesis and Preformulation Studies of KTTKS and PAL-KTTKS As Anti-Wrinkle Peptides”. International Pharmacy Acta, vol. 1, no. 1, Mar. 2018, pp. 28-28, doi:10.22037/ipa.v1i1.19963.