| Securitization theory T Balzacq How security problems emerge and dissolve, 2011 | 1241 | 2011 |
| ‘Securitization’revisited: Theory and cases T Balzacq, S Léonard, J Ruzicka International relations 30 (4), 494-531, 2016 | 749 | 2016 |
| EU border security and migration into the European Union: FRONTEX and securitisation through practices S Léonard Developing european internal security policy, 89-112, 2014 | 651 | 2014 |
| Reconceptualizing the audience in securitization theory S Léonard, C Kaunert Securitization theory, 71-90, 2010 | 302 | 2010 |
| The development of the EU asylum policy: venue-shopping in perspective C Kaunert, S Léonard Journal of European Public Policy 19 (9), 1396-1413, 2012 | 221 | 2012 |
| The creation of FRONTEX and the politics of institutionalisation in the EU external borders policy S Leonard Journal of contemporary European research 5 (3), 371-388, 2009 | 183 | 2009 |
| The securitisation of migration in the European Union: Frontex and its evolving security practices S Léonard, C Kaunert The Spiralling of the Securitisation of Migration in the European Union, 91-103, 2023 | 149 | 2023 |
| The collective securitisation of terrorism in the European Union C Kaunert, S Léonard Collective Securitisation and Security Governance in the European Union, 35-51, 2020 | 100 | 2020 |
| Refugees, security and the European Union S Léonard, C Kaunert Routledge, 2019 | 99 | 2019 |
| EU counterterrorism and the European neighbourhood policy: an appraisal of the southern dimension C Kaunert, S Léonard Terrorism and political violence 23 (2), 286-309, 2011 | 84 | 2011 |
| The European Union asylum policy after the Treaty of Lisbon and the Stockholm Programme: towards supranational governance in a common area of protection? C Kaunert, S Léonard Refugee Survey Quarterly 31 (4), 1-20, 2012 | 83 | 2012 |
| European homeland security: a European strategy in the making? C Kaunert, S Léonard, P Pawlak Routledge, 2012 | 64 | 2012 |
| International Exposure: Perspectives on Modern European Pornography, 1800–2000 J Phillips, M Romanets, E Borenstein, C Colligan, S Leonard, KS Milter, ... Rutgers University Press, 2005 | 63 | 2005 |
| The ‘securitization’of asylum and migration in the European Union: beyond the Copenhagen School’s framework S Leonard SGIR sixth pan-European international relations conference 3, 2007 | 59 | 2007 |
| The social construction of an EU interest in counter-terrorism: US influence and internal struggles in the cases of PNR and SWIFT C Kaunert, S Léonard, A MacKenzie The European Union’s Fight Against Terrorism, 16-38, 2016 | 55 | 2016 |
| Venue-shopping and the role of non-governmental organisations in the development of the European Union asylum policy C Kaunert, S Léonard, U Hoffmann Comparative Migration Studies 1, 179-200, 2013 | 48 | 2013 |
| Introduction: Supranational governance and European Union security after the Lisbon Treaty-Exogenous shocks, policy entrepreneurs and 11 September 2001 C Kaunert, S Léonard Cooperation and Conflict 47 (4), 417-432, 2012 | 46 | 2012 |
| The European Union Counter-terrorism Coordinator and the external dimension of the European Union counter-terrorism policy A Mackenzie, O Bures, C Kaunert, S Léonard Justice and Home Affairs Agencies in the European Union, 53-66, 2016 | 39 | 2016 |
| European security, terrorism and intelligence: tackling new security challenges in Europe C Kaunert, S Léonard Springer, 2013 | 39 | 2013 |
| Border controls as a dimension of the European Union’s counter-terrorism policy: A critical assessment S Léonard EU Counter-Terrorism and Intelligence, 125-151, 2017 | 38 | 2017 |
