S. S. Al-Lihaibi, A. Al-Sofyani, G. R. Niaz, V. Uddin Ahmad, M. Noorwala, and F. Vali Mohammad, “Long-chain wax esterns and diphenylamine in fire coral Millepora dichotoma and Millepora platyphylla from Saudi Red Sea Coast”, Sci. mar., vol. 66, no. 2, pp. 95–102, Jun. 2002.