2025 Nielsen: Book review of Mau, Steffen 2023. Sorting Machines. The Reinvention of the Border in the 21st Century                                   - Nordic Journal of Migration

2024 Nielsen & Kaisto: Navigating the ‘grey zone’: academic collaboration and research on/in Russia during geopolitical crisis                       - Fennia

2023 Sydd, Nielsen & Albrecht (Eds.): Geographies in times of crises - University of Eastern Finland

2023 Nielsen: Review of: Redefining borders in the contested territory between San Pedro and San Andres Cholula - Qeios

2022 Nielsen: Us and Them: cross-border interaction between Finland and Russia - Barents Studies

2022 Albrecht, Sidorenko, Nielsen, Kortelainen & Poikolainen (Eds.): Multiple Nordic Geographies                                                                   - University of Eastern Finland

2021 Nielsen: Divided Peoples: Policy, Activism, and Indigenous Identities on the U.S.-Mexico Border                                                             - Journal of Borderlands Studies

2021 Nielsen: State and non-state cross-border cooperation between North Karelia and its (un)familiar Russian neighbors                                  - Geography, Environment, Sustainability

2020  Nielsen: Dangerous border - but for whom? - Versus

2020  Nielsen: Perception of danger in the southern Arizona borderlands - Fennia International Journal of Geography 

2020  Nielsen: Hvad er et dansk statsborgerskab værd? - Jyllands-Posten

2019  Nielsen: Encountering (un)familiar Russia: thresholds and perceptions when crossing the border                                                                - Journal of Borderlands Studies

2018  Nielsen: Migrant Deaths in the Arizona Desert: La Vida no Vale nada - Journal of Borderlands Studies

2010  Nielsen: Encountering Invisible Boundaries: Swedish-speaking Finns in Joensuu - University of Eastern Finland

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