Joly-Pottuz, L., N. Matsumoto, H. Kinoshita, B. Vacher, M. Belin, G. Montagnac, J. M. Martin, and N. Ohmae,
"Diamond-derived carbon onions as lubricant additives",
Tribology International, vol. 41, issue 2, pp. 69 - 78, 2/2008.
Joly-Pottuz, L., B. Vacher, T. Mogne, J. M. Martin, T. Mieno, C. N. He, and N. Q. Zhao,
"The Role of Nickel in Ni-Containing Nanotubes and Onions as Lubricant Additives",
Tribology Letters, vol. 29, issue 3, pp. 213 - 219, 3/2008.