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African Networks Lab

Publications

Peer-reviewed articles

  • Walther O, Radil S, Russell D. 2025. The spatial conflict life cycle in Africa. Annals of the American Association of Geographers 115(2): 456-477.
  • Walther O, Nugent P, Goewey S. 2024. The impact of transport policies on road accessibility in Ghana (2010-2019). African Geographical Review (online (opens in new tab)).
  • Prieto-Curiel R, Walther O, Davies E. 2023. Detecting trends and shocks in terrorist activities. PLOS ONE 18(9): e0291514 (opens in new tab).
  • Walther O, Prieto-Curiel R, Padron J, Scheuer J. 2023. Mapping the travel geography of the 9/11 network. The Professional Geographer 75(5): 855-869 (opens in new tab).
  • Walther O, Radil S, Russell D, Trémolières M. 2023. Introducing the Spatial Conflict Dynamics indicator of political violence. Terrorism and Political Violence 35(3): 533-552 (opens in new tab).
  • Walther O, Amilhat Szary AL, Brambilla C, Brunet-Jailly E, Klatt M, Laine J, Moyo I, Nugent P, Ptak T, Radil S. 2023. Border studies at 45. Political Geography 104, 102909 (opens in new tab).
  • Radil S, Walther O, Dorward N, Pflaum M. 2023. Urban-rural geographies of political violence in North and West Africa. Africa Security 16(1 (opens in new tab)).
  • Radil S, Irmisher I, Walther O. 2022. Contextualizing the relationship between borderlands and political violence: A dynamic space-time analysis in West and North Africa. Journal of Borderlands Studies, 37(2): 253-271 (opens in new tab).
  • Rojas J, Walther O. 2022. Revolutionary insurgents or conservative reactionaries? National Liberation Army’s transnational expansion in Colombia and Venezuela. Journal of Latin American Geography 22(2): 6-33 (opens in new tab).
  • Walther O. 2022. Security and trade in African borderlands – An introduction. Journal of Borderlands Studies 37(2): 229-234 (opens in new tab).
  • Walther O, Radil S, Russell D. 2021. Mapping the changing structure of conflict in North and West Africa. African Security 14(3): 211-238 (opens in new tab).
  • Skillicorn D, Walther O, Leuprecht C, Zheng Q. 2021. The diffusion and permeability of political violence in North and West Africa. Terrorism and Political Violence 33(5): 1032-1054.
  • Prieto Curiel R, Walther O, O’Clery C. 2020. Uncovering the internal structure of Boko Haram through its mobility patterns. Applied Network Science 5(28): 1-23 (opens in new tab).
  • Valerio V, Walther O, Eilittä M, Cissé B, Muneepeerakul R, Kiker G. 2020. Network analysis of regional livestock trade in West Africa. PLOS ONE (opens in new tab) 15(5): e0232681.
  • Walther O, Leuprecht C, Skillicorn D. 2020. Political fragmentation and alliances among armed non-state actors in North and Western Africa (1997-2014). Terrorism and Political Violence 32(1): 167-186 (opens in new tab).
  • Walther O, Dambo L, Koné M, van Eupen M. 2019. Mapping travel time to assess accessibility in West Africa: The role of borders, checkpoints and road conditions. Journal of Transport Geography 82 (opens in new tab).
  • Walther O, Tenikue M, Trémolières M. 2019. Economic performance, gender and social networks in West African food systems. World Development 124: 1-14 (opens in new tab).
  • Leuprecht C. Walther O, Skillicorn D, Ryde-Collins H. 2017. Hezbollah’s global tentacles: A relational approach to convergence with transnational organised crime. Terrorism and Political Violence 29(5): 902-921 (opens in new tab).
  • Leuprecht C, Aulthouse A, Walther O. 2016. The puzzling resilience of transnational organized criminal networks. Police Practice and Research 17(4): 376-387 (opens in new tab).
  • Kuépié M, Tenikue M, Walther O. 2016. Social networks and small businesses performance in West African border regions. Oxford Development Studies 44(2): 202-219 (opens in new tab).
  • Zheng Q, Skillicorn D, Walther O. 2015. Signed directed social network analysis applied to group conflict. IEEE International Conference on Data Mining Workshop (ICDMW): 1007-1014 (opens in new tab).
  • Walther O, Christopoulos D. 2015. Islamic terrorism and the Malian rebellion. Terrorism and Political Violence 27(3): 497-519 (opens in new tab).
  • Walther O. 2015. Business, brokers and borders: The structure of West African trade networks. Journal of Development Studies 51(5): 603-620 (opens in new tab).
  • Walther O, Howard A, Retaillé D. 2015. West African spatial patterns of economic activities: combining the ‘spatial factor’ and ‘mobile space’ approaches. African Studies 74(3): 346-365 (opens in new tab).
  • Walther O. 2014. Trade networks in West Africa: A social network approach. Journal of Modern African Studies 52(2): 179-203 (opens in new tab).

Books and reports

Other publications

  • Harris-Coble, L. (2023). Mapping Seasonal Livestock Trade Movements in West Africa. American Association of Geographers (AAG) Annual Meeting, Denver, Co, March (poster).
  • Radil S, Walther O, Dorward N, Pflaum M. 2022. Urban-rural geographies of political violence in North and West Africa. SSRN 4171240.
  • Radil S, Walther O, Dorward N, Pflaum M, Trémolières M. 2022. Conflicts are becoming increasingly rural in North and West Africa. OECD Development Matters, 26 July.
  • Pflaum M. 2021. Pastoralist violence in North and West Africa. OECD West African Papers 31 (opens in new tab).
  • Valerio, V. 2020. The structure of livestock trade in West Africa. OECD West African Papers 29 (opens in new tab).
  • Walther O, Radil S, Russell D, Trémolières M. 2020. Introducing the Spatial Conflict Dynamics indicator of political violence. arXiv 2003.01750.
  • Walther O, Radil S, Russell D. 2019. Mapping the geography of political violence in North and West Africa. OECD Development Matters, 17 Oct.
  • Walther O. 2020. Femmes et conflicts en Afrique de l’Ouest. OECD West African Papers 28 (opens in new tab).
  • Trémolières M, Walther O. 2019. Accessibility and infrastructure in border cities. OECD West African Papers 23 (opens in new tab).
  • Trémolières M, Walther O.2019. Business and health in border cities. OECD West African Papers 22 (opens in new tab).
  • Trémolières M, Walther O.2019. Population and morphology of border cities. OECD West African Papers 21 (opens in new tab).
  • Trémolières M, Walther O.2019. Regional integration in border cities. OECD West African Papers 20 (opens in new tab).
  • Radil S, Walther O. 2018. Social networks and geography: a review of the literature and its implications. arXiv (opens in new tab) 1805.04510.
  • Hoffmann L, Melly P, Walther O. 2017. Empowering Women in West African Markets. Case Studies from Kano, Katsina (Nigeria) and Maradi (Niger). Dakar, World Food Programme (download (opens in new tab)).
  • Walther O. 2017. The blurred boundaries of political violence in the Sahel-Sahara. OECD Development Matters, 29 September (read (opens in new tab)).
  • Walther O. 2017. Wars and conflicts in the Sahara-Sahel. OECD West African Papers 10 (opens in new tab).
  • Walther O, Renk S. 2017. Can social network analysis inform African development policies? Dakar, World Food Programme (download (opens in new tab)).
  • Walther O. 2017. Cross-border co-operation networks in West Africa. Paris, OECD West African Papers 6 (opens in new tab).
  • Walther O, Kuépié M, Tenikue M. 2017. When social networks become a burden for African traders. The Brookings Institution, Africa in Focus Series (read).
  • Walther O. 2016. Mapping West African Trade Networks. Washington DC, The Brookings Institution, Africa in Focus Series (read).
  • Walther O, Tisseron A. 2015. Strange bedfellows: a network analysis of Mali’s northern conflict. The Broker (read).
  • Walther O. 2015. Eating soup with a knife: Confronting warfare in the Sahara. OECD Observer 303 (opens in new tab).
  • Walther O, Vollmer S. 2015. Mapping the potential of cross-border cooperation in West Africa. GREAT Insights 4(6): 34-36 (opens in new tab).

Links to PDFs in OA journals, where available; otherwise, PDFs are intended for single copy, research use only, to comply with copyright regulations.