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Azulene

M Palmer, N Jones, S Hoffmann, R Aitken, M Coreno, M de Simone, C Grazioli, I Patterson, The excited states of azulene: A study of the vibrational energy levels for the lower pipi*-valence states by configuration interaction and density functional calculations, and theoretical studies of the Rydberg states, JCP 157, 154307 (2022)