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El Goresy, A., Dubrovinsky, L., Gillet, P., Mostefaoui, S., Graup, G., Drakopoulos, M., Simionovici, A., Swamy, V., & Masaitis, V. L. (2003). A new natural, super-hard, transparent polymorph of carbon from the Popigai impact crater, Russia. Comptes Rendus Géoscience, 335(12), 889-898. External link
