The online supplement provides some key rigorous and lengthy proofs that were not included in the paper entitled “Valid Inequalities for Two Period Relaxations of Big-Bucket Lot-Sizing Problems: Zero Setup Case”.
Doostmohammadi, M. (Creator), Akartunali, K. (Creator) (16 May 2018). Supplementary data for: "Valid inequalities for two-period relaxations of big-bucket lot-sizing problems". University of Strathclyde. 1_s2(1.pdf). 10.15129/2de41057-45a2-422e-8ec9-f6a4589351df