https://www.ben-evans.com/presentations
http://www.oxfamfrance.org/sites/default/files/file_attachments/vfrapport_oxfam_cac40_des_profits_sans_partage.pdf
ftp://ftp.unibocconi.it/pub/RePEc/bcu/papers/iefewp69.pdf
https://www-adb-org.translate.goog/sites/default/files/publication/747966/global-value-chain-development-report-2021.pdf?_x_tr_sl=en&_x_tr_tl=de&_x_tr_hl=de&_x_tr_pto=nui,sc