Vibrational spectrum and electronic structure of C60-fullerene in an external electric field Andrei V. Tuchin, Larisa A. Bityutskaya and Eugene N. Bormontov Eur. Phys. J. D, 69 3 (2015) 87 Published online: 24 March 2015 DOI: 10.1140/epjd/e2015-50440-2