“…Other families of lifetime distributions have been investigated by several authors. For example, Kus (2007), Tahmasbi and Rezaei (2008), Chahkandi and Ganjali (2009), Barreto-Souza and Cribari-Neto (2009), Silva et al (2010), Barreto-Souza et al (2011), Cancho et al (2011), Louzada-Neto et al (2011), Morais and Barreto-Souza (2011), Hemmati et al (2011), Alkarni and Orabi (2012), Nadarajah et al (2013), Bakouch et al (2014), and others.…”