• Cooperation agreement (5-year) between Sofia University “St. Kliment Ohridski”, the University of Lille and the University of Quebec at Rimouski – signature: 08/03/2017-06/04/2017.
• Specific agreement (5-year) for Zaldapa, between Sofia University “St. Kliment Ohridski”, Dobrich Regional Historical Museum, the University of Lille and the University of Quebec at Rimouski – signature: 20/11/2017-09/01/2018.
• Cooperation agreement (3-year) between the Leibniz-Institut für Geschichte und Kultur des östlichen Europa (GWZO), the University of Lille and the HALMA-UMR 8164 research centre – signature : 27/11/2018-29/10/2019; renewal: 28/06/2023-28/10/2023.
• Cooperation agreement (3-year) between the Institute of Archaeology in Belgrade, the University of Lille and the HALMA-UMR 8164 research centre – signature : 13/06/2019-18/11/2019.
• Cooperation agreement (3-year) between the Centre of Thracology “Prof. Aleksandar Fol” of the Institute of Balkan Studies at the Bulgarian Academy of Sciences, the University of Lille and the HALMA-UMR 8164 research centre – signature : 05/02/2020-09/07/2020.