“…Most of the earlier studies consider only one decision variable, for example, Penev and De Ron 17 and Igarashi et al 18 for disassembly levelling; Lambert, 19 Hui et al, 20 Adenso-Diaz et al 21 and Jin et al 22 for disassembly sequencing; and Bufardi et al 23 and Jun et al 24 for determining end-of-life options. As an extension, several articles consider two decision variables at the same time; for example, see Pnueli and Zussman, 25 Johnson and Wang, 26,27 Lambert, 28,29 Kang et al 30,31 and Vinodh et al 32,33 for determining disassembly level and sequence at the same time. Finally, some other articles consider all the three decision variables, for example, see Erdos et al, 34 Teunter, 35 Behdad et al 36 and Ma et al 37 Disassembly lot-sizing As a mid-or short-term planning activity, various researches have been done on disassembly lot-sizing.…”