A numerical study of the Kullback-Leibler distance in functional magnetic resonance imaging - Cabella, Brenno Caetano Troca; Sturzbecher, Márcio Júnior; Tedeschi, Walfred; Baffa, Oswaldo; Araújo, Dráulio Barros de; Neves, Ubiraci Pereira da Costa (Brazilian Journal of Physics, 2008)