Notes, Comments and Preliminary results Dec 30 2023 Amirah El-Haddad and Chahir Zaki   Vulnerability and resilience: crisis transmission channels for GVCs in COVID times   Abstract  Contact Information  Citation  Full Text  -  Preliminary Result   Oct 13 2019 Nora Aboushady and Chahir Zaki   Investment climate and Trade Margins in Egypt: Which Factors Do Matter?   Abstract  Contact Information  Citation  Full Text  -  Note