1. 9) A. Patel, M. Thomas, D. Pung, B. Elsbrock, T. Long, Cosmetics & Toiletries, 117 (12), 43-44 (2002)
2. 10) M. A. Farage, J. Cosmet. Sci., 151 (3) , 153-167 (2000)
3. 11) A. Yamaguchi, K. Onishi, K. Kuriyama, J. Soc. Cosmet. Chem., 44, 118-125 (2010)
4. 12) A. Yamaguchi, K. Onishi, Proceedings of the 10th Asian Societies of Cosmetic Scientists, 38-39, 2011