Saunders, Martin; Jimenez-Vazquez, Hugo A.; Bangerter, Benedict W.; Cross, R. James; Mroczkowski, Stanley; Freedberg, Daron I.; Anet, Frank A. L. (1994). "3He NMR: A Powerful New Tool for Following Fullerene Chemistry". Journal of the American Chemical Society116 (8): 3621–3622. doi:10.1021/ja00087a067.