Exciton-phonon coupling strength in single wall carbon nanotubes G. L. Yu, Q. L. Liang, Y. L. Jia and G. Tang Eur. Phys. J. B, 70 4 (2009) 469-473 Published online: 21 July 2009 DOI: 10.1140/epjb/e2009-00259-3