Efficient route to large arrays of CN[sub x] nanofibers by pyrolysis of ferrocene/melamine mixtures. - Terrones, M.; Terrones, H.; Grobert, N.; Hsu, W.K.; Zhu, Y.Q.; Hare, J.P.; Kroto, H.W.; Walton, D.R.M.; Kohler-Redlich, Ph.; Ruhle, M.; Zhang, J.P.; Cheetham, A.K. (Applied Physics Letters, 1999)