Spectroscopic analysis of different types of single-wall carbon nanotubes H. Kuzmany, B. Burger, M. Hulman, J. Kürti, A. G. Rinzler and R. E. Smalley Europhys. Lett., 44 4 (1998) 518-524 Published online: 01 September 2002 DOI: 10.1209/epl/i1998-00504-y