| Europos Sąjunga: enciklopedinis žinynas G Vitkus Eugrimas, 2002 | 71 | 2002 |
| Diplomatinė aporija: tarptautinė Lietuvos ir Rusijos santykių normalizacijos perspektyva G Vitkus Vilniaus universiteto leidykla, 2006 | 33 | 2006 |
| Russian pipeline diplomacy: a Lithuanian response G Vitkus Acta Slavica Iaponica, 25-46, 2009 | 20 | 2009 |
| Changing security regime in the Baltic Sea region G Vitkus Lithuanian annual strategic review 2002., 109-132, 2003 | 20 | 2003 |
| Politologija G Vitkus Danielius, 2001 | 18 | 2001 |
| Europos Sąjungos užsienio politika: trumpas vadovas G Vitkus Vilniaus universitetas, 2008 | 17 | 2008 |
| Europos Sąjunga G Vitkus, R Grikienis, K Maniokas, R Martikonis, E Sinkevičius, ... Enciklopedinis žinynas, 3rd edn. Eugrimas, Vilnius, 2008 | 14 | 2008 |
| High time for reflection: 15 years of Lithuanian-Russian relations G Vitkus Lithuanian Foreign Policy Review, 140-151, 2006 | 12 | 2006 |
| Towards Stronger Normative Power: The Nature of Shift in EU Foreign Policy in the Context of the Crisis in Ukraine G Vitkus European Integration Studies 9 (1), 8-19, 2015 | 11 | 2015 |
| Lithuanian-Russian Relations in 1990-1995 G Vitkus A study of Lithuanian Foreign Policy. Mannheim: Forshungsschwerpunkt …, 1996 | 8 | 1996 |
| Small Is Small: Euroscepticism in Lithuanian Politics G Vitkus Euroscepticism in the Baltic States: Uncovering Issues, People and …, 2017 | 7 | 2017 |
| Referendumai dėl narystės Europos Sąjungoje: patirtis, problemos ir pamokos Lietuvai G Vitkus Politologija, 2-20, 2002 | 7 | 2002 |
| Lietuvos integracija į Europos Sąjungą. Būklės, perspektyvų ir pasekmių studija K Maniokas, G Vitkus Vilnius: EISC, 304, 1997 | 7 | 1997 |
| At the Cross-road of Alternatives: Lithuanian Security Policies in 1995-1997 G Vitkus Baltic Security. Looking towards the 21th century, 1997 | 7 | 1997 |
| Lithuania's Integration Into the European Union: Summary of the Study on the Status, Perspectives and Impact K Maniokas, G Vitkus European Integration Studies Centre, 1997 | 7 | 1997 |
| Trilemmas of recognition in the Baltic states’ foreign policies G Vitkus Journal of Baltic Studies 50 (3), 307-326, 2019 | 6 | 2019 |
| Lithuania: a case of confidence in the European project G Vitkus < bound method Organization. get_name_with_acronym of< Organization …, 2016 | 6 | 2016 |
| Wars of Lithuania: a systemic quantitative analysis of Lithuania's wars in the nineteenth and twentieth centuries G Vitkus (No Title), 2014 | 6 | 2014 |
| Dabartinis Europos Sąjungos ekonominės ir politinės integracijos etapas-kaip spręsti" sendaikčio" dilemą? G VItkuS Politologija, 3-29, 2009 | 6 | 2009 |
| Lietuvos įtaka ES Tarybos sprendimams G Vitkus, J Novagrockienė Lietuvos metinė strateginė apžvalga 6, 91-120, 2007 | 6 | 2007 |
