A New Classifier for Speaker Verification Based on the Fractional Brownian Motion Process. - Ricardo Sant Ana; Rosangela Coelho; Abraham Alcaim (TSD, 2004)

On the Performance of Hurst-Vectors for Speaker Identification Systems. - Ricardo Sant Ana; Rosangela Coelho; Abraham Alcaim (ICAPR (1), 2005)

Low-frequency ambient noise generator with application to automatic speaker classification. - Ricardo Sant Ana; Rosângela Coelho (EURASIP J. Adv. Signal Process., 2012)