Regert, M., T. Devièse, A. S. Le Ho, and A. Rougeuller. "Reconstructing Ancient Yemeni Commercial Routes during the Middle Ages Using Structural Characterization of Terpenoid Resins." Archaeometry 50/4 (2008): 668–695.

Regert, M., T. Devièse, A. S. Le Ho, and A. Rougeuller. "Reconstructing Ancient Yemeni Commercial Routes during the Middle Ages Using Structural Characterization of Terpenoid Resins." Archaeometry 50/4 (2008): 668–695.