Novel event classification based on spectral analysis of scintillation waveforms in Double Chooz. (31st January 2018) - Abrahão, T.; Almazan, H.; Anjos, J.C. dos; Appel, S.; Bekman, I.; Bezerra, T.J.C.; Bezrukov, L.; Blucher, E.; Brugière, T.; Buck, C.; Busenitz, J.; Cabrera, A.; et al.