An interpretation of the vibrational spectra of insulating and electrically conducting poly(3-methylthiophene) aided by a theoretical dynamical model - Hernandez, V.; Ramirez, F. J.; Otero, T. F.; Lopez Navarrete, J. T. (American Institute of Physics (AIP), 1994)
http://dx.doi.org/10.1063/1.466982
Keywords: U; V