Published Quarterly Journal of Economics Online 10 Aug 2024 Published Oct 2024Optimal Resilience in Multitier Supply ChainsGene M Grossman · Elhanan Helpman · Alejandro SabalGrossman, Helpman, and Sabal ask what market failures arise in vertical supply chains with multiple production tiers, limited (non-anonymous) supply networks, arms-length transactions, and recurrent …