“…Even though some common denominators can be found, the uncertainties of the design environment vary from one case to another case. Demand (or quantity) uncertainty Zhang et al (2010), Xiao et al (2010), Qin and Ji (2010), Amaro and Barboso-Povoa (2009), Lee and Dong (2009), Chouinard et al (2008), El-Sayed et al (2010, Salema et al (2007), Biehl et al (2007), quality uncertainty (Qin & Ji, 2010 ;Chouinard et al, 2008) price uncertainty (Amaro & Barboso-Povoa, 2009), lead times or timing uncertainty (Lieckens & Vandaele, 2007;Biehl et al, 2007) are some of the investigated uncertainty dimensions of return networks. The modelling efforts to include these uncertainty dimensions vary.…”