In Thomsen and Reich, 2007, we can find described the "vibrational properties of single-walled carbon nanotubes", which are reflecting "the electron and phonon confinement as well as the cylindrical geometry of the tubes". "Metallic and semiconducting tubes can be distinguished from the high-energy Raman spectra. The high-energy phonons are remarkable because of their strong electron-phonon coupling, which leads to phonon anomalies in metallic tubes". Thomsen and Reich discuss the Raman-active phonons, and, besides their frequencies and symmetries, the electron-phonon coupling is also discussed in detail. Let us stress that in Thomsen and Reich we can also find the discussion of phonon eigenvectors. In fact, using "the point group and the positions of the carbon atoms the number and symmetry of the phonon eigenvectors" can be determined (see references in Thomsen and Reich). The symmetries of the eigenmodes are available by the Thomsen and Reich's Table . Let us note that, according to Thomsen and Reich, the "Raman spectrum of carbon nanotubes is dominated by scattering from totally symmetric phonons" (Thomsen and Reich, and references therein).