Spectroscopic study of phase transformations between orthorhombic and tetragonal C60 polymers T. Wågberg, A. Soldatov and B. Sundqvist Eur. Phys. J. B, 49 1 (2006) 59-65 Published online: 31 January 2006 DOI: 10.1140/epjb/e2006-00030-4