
https://wiiw.ac.at/the-granular-trade-and-production-activities-grantpa-database-dlp-6911.pdf

https://pism.pl/webroot/upload/files/Biuletyn/PISM%20Bulletin%20no%20174%20(2091)%208%20November%20%202022.pdf

https://www.wilsoncenter.org/sites/default/files/media/uploads/documents/CEF%20230809%20Food%20and%20Ag_Report-FINAL%201pg.pdf