“…See for example, Baykasoglu and Dereli (2009), Simaria and Vilarinho (2009), Kara and Tekin (2009), Yagmahan (2011), Xu and Xiao (2011), Chutima and Chimklai (2012, Hamzadayi and Yildiz (2012), Rabbani et al (2012), Liao et al (2012), Akpinar et al (2013), Kucukkoc et al (2013), Manavizadeh et al (2013 and Kucukkoc and Zhang (2015a, 2015b, 2014a for recently published studies on type-I problems; and Hackman et al (1989), Simaria and Vilarinho (2004), Liu et al (2004), Battini et al (2007), Ozcan et al (2011) and Yoosefelahi et al (2012) for studies published on type-II problems.…”