1. Ali-Yrkkö, J., Mattila, J., & Seppälä, T. (2017). Estonia in global value chains. ETLA Reports No 69. https://pub.etla.fi/ETLA-Raportit-Reports-69.pdf. Accessed 12 Mar 2022.
2. Amador, J., & di Mauro, F. (Eds.). (2016). The age of global value chains: Maps and policy issues. CEPR Press.
3. AuveTech. (2020). Majandusaasta aruanne 2020. Tallinn, Estonia. https://ariregister.rik.ee/est/company/14635771. Accessed 23 Jul 2024.
4. Baldwin, R. (2012). Global supply chains: Why they emerged, why they matter, and where they are going. Working Paper FGI-2012–1. https://www.asiaglobalinstitute.hku.hk/storage/app/media/pdf/richard-baldwin.pdf. Accessed 13 Apr 2022.
5. Barba Navaretti, G., & Venables, A. J. (2004). Multinational firms in the world economy. Princeton University Press.