Bilek, H., Wonglertnirant, N., Ngawhirunpat, T., Opanasopit, P., & Vollrath, M. K. .-. (2013). Effect of Terpenes on the Skin Permeation of Ketoprofen through Shed Snake Skin. Science, Engineering and Health Studies, 3(2), 33–41. https://doi.org/10.14456/sustj.2009.7