Probing the C₆₀ triplet state coupling to nuclear spins inside and out. by Filidou, V, Mamone, S, Simmons, S, Karlen, S, Anderson, H, Kay, C, Bagno, A, Rastrelli, F, Murata, Y, Komatsu, K, Lei, X, Li, Y, Turro, N, Levitt, M, Morton, J