| How similar are cohabitation and marriage? Legal approaches to cohabitation across Western Europe B Perelli‐Harris, NS Gassen Population and development review 38 (3), 435-467, 2012 | 323 | 2012 |
| Spatial Aspects of the Rise of Nonmarital Fertility Across Europe Since 1960: The Role of States and Regions in Shaping Patterns of Change/Aspects spatiaux de l'augmentation de … S Klüsener, B Perelli-Harris, NS Gassen European Journal of Population/Revue européenne de Démographie, 137-165, 2013 | 110 | 2013 |
| The rise in divorce and cohabitation: Is there a link? B Perelli‐Harris, A Berrington, NS Gassen, P Galezewska, JA Holland Population and development review 43 (2), 303, 2017 | 107* | 2017 |
| The increase in cohabitation and the role of union status in family policies: A comparison of 12 European countries N Sánchez Gassen, B Perelli-Harris Journal of European Social Policy 25 (4), 431-449, 2015 | 88 | 2015 |
| State of the Nordic Region 2018: Immigration and integration edition A Karlsdóttir, L Rispling, G Norlén, L Randall, NS Gassen, T Heleniak, ... Nordic Council of Ministers, 2018 | 54* | 2018 |
| The myriad of complex demographic responses of terrestrial mammals to climate change and gaps of knowledge: A global analysis M Paniw, TD James, C Ruth Archer, G Römer, S Levin, A Compagnoni, ... Journal of Animal Ecology 90 (6), 1398-1407, 2021 | 45 | 2021 |
| Integrating Immigrants into the Nordic Labour Markets: An Overall Perspective L Calmfors, N Sanchez Gassen Nordregio, 2019 | 43* | 2019 |
| State of the nordic region 2020. Nordic Council of Ministers J Grunfelder, G Norlén, L Randall, NS Gassen | 35* | 2020 |
| Global goals for local priorities: The 2030 Agenda at local level N Sánchez Gassen, O Penje, E Slätmo Nordregio, 2018 | 27 | 2018 |
| The sensitivity analysis of population projections H Caswell, NS Gassen Demographic Research 33, 801-840, 2015 | 25 | 2015 |
| The Nordic Population in 2040–Analysis of past and future demographic trends N Sánchez Gassen, T Heleniak Nordregio (Nordregio Report 2019/6), 2019 | 24* | 2019 |
| Towards a territorially just climate transition—Assessing the swedish EU territorial just transition plan development process J Moodie, C Tapia, L Löfving, NS Gassen, E Cedergren Sustainability 13 (13), 7505, 2021 | 20 | 2021 |
| Integrating Immigrants into the Nordic Labour Markets, Copenhagen: Nordic Council of Ministers L Calmfors, N Sánchez Gassen Doi, 2019 | 19* | 2019 |
| The reciprocal relationship between the state and union formation across western Europe: Policy dimensions and theoretical considerations B Perelli-Harris, N Sánchez Gassen Max Planck Institute for Demographic Research, 2010 | 16 | 2010 |
| Germany’s future electors: Developments of the German electorate in times of demographic change NES Gassen Springer, 2014 | 15* | 2014 |
| Population growth and agening N Sánchez Gassen Past, present and future trends. I Grunfelder et al.(eds.). State of the …, 2018 | 14* | 2018 |
| EU-policies and fertility: the emergence of fertility-related family policies at the supra-national level G Neyer, A Caporali, NS Gassen Stockholm Research Reports in Demography, 2021 | 13 | 2021 |
| Integrating Immigrants into the Nordic Labour Markets: The impact of the COVID-19 pandemic N Sánchez Gassen, O Penje, B Bratsberg, O Raaum, K Roed, ... Nordic Council of Ministers, 2021 | 8 | 2021 |
| COVID-19 as a systemic shock: curb or catalyst for proactive policies towards territorial cohesion? S Bourdin, J Moodie, NS Gassen, D Evers, F Adobati, M Amdaoud, ... Regional Studies, 1-14, 2023 | 7 | 2023 |
| Scenarios for 2015–2080: The impact of migration on population and ageing N Sanchez Gassen, T Heleniak Nordregio policy brief 3, 2016 | 6* | 2016 |
