Orosz, L. : Teória ústavy a ústavné systémy vybraných štátov Európskej únie. Košice: Šafárik Press, 2020, s.- 336 ISBN 978-80-8152-8682

Orosz, L. - Štenpien, E.: A Szlovák Kösztársaság válôasztójoga - az inspiráció lehetséges forrása. In. Tanulmányok a választójog, a választási rendszerek és a népszavazás aktuális kérdéseiröl: A Választás és a Demokrácia Ludovika Kutatóczoport kutatási eredményei (2017 - 2018). Budapest: Dialóg Campus Kiadó, 2019, s. 155 -228, ISBN-978-6156-020-963

Orosz, L.: Formovanie ústavných základov Slovenskej republiky a ďalší vývoj ústavného systému. In: Ústava Slovenskej republiky : komentár. - Bratislava : Wolters Kluwer SR, 2021. - ISBN 9788057103806. - S. 20-77 [2,5 AH].

Mazák, J. – Orosz, L.: Quashing the decisions on amnesty in the constitutional system of the Slovak Republic: Opening or closing Pandora's box? The lawyer quarterly : international journal for legal research. - roč. 8, č. 1 (2018), s. 1-21. - ISSN 1805-840X (SCOPUS)

Orosz, L. - Molek, P. - Svák,J. - Šimíček, V.: Volebné právo a súdny prieskum volieb v Českej republike a Slovenskej republike. Bratislava: C.H. Beck, 2016, s.472. ISBN 978-80-89603-41-1

VEGA 1/0399/20 Constitutional law-making of the National Council of the Slovak Republic (legal-political analysis - assessment - perspective, 1/2020-12/2022, principal investigator

The key aim of the project is the constitutional and political analysis and evaluation of the existing constitutional activity of the National Council of the Slovak Republic (hereafter referred to as the „National Council”) in terms of its impact on the quality of the Constitution of the Slovak Republic, resp. the constitutional system of the Slovak Republic (also in international comparison), the authority and acceptance of the constitution in the state and society, as well as the cultivation of the constitutional-political system and the formation of political and legal culture. Based on the results of the analysis, the research team formulates ideas for improving and streamlining the constitutional work of the National Council, as well as strengthening the stability of the Constitution, including the form of concrete ideas de constitutione ferenda and de lege ferenda.

VEGA 1/0386/19 New Dimension Of The Methodology Of The Legal Argumentation - A Role Of The Legal Principles In Multi - Level Legal System, 01/2019-12/2021, co-worker

The scientific objective of the project is to investigate the conflict potential of legal principles in the process of solving conflicts arising between different levels of the legal system. Finding a suitable argumentation model that is uniformly acceptable across all levels of the multilevel legal system is one of the most recent challenges of the current legal science. The appropriate methodological solution is the traditional argumentation method of grasping the problem of gaps, just completed with the dimension of processes of globalization and Europeanisation. The innovative way of applying the legal principles makes it possible to achieve a value consensus between national, European and international legal systems. Part of the project is the analysis of the problems of this methodological procedure and the examination of the importance of the constitutional principles of the Slovak Republic in the multi-level communication process.

APVV 0814-12 Binding nature and Applicability of the Charter of the Fundamental Rights of the European union in a Member State with regard to the Judicial Power in the Slovak republic, 10/2013-12/2016, co-worker

The Charter of fundamental rights of the EU has become a legally binding instrument through the mediation of the Treaty on EU. It has extented the number of the systems regulating the protection of fundamental rights at the level of the EU. It is clear from the case law of the Slovak courts that neither ordinary court nor constitutional judiciary are not able to differentiate amongst particular systems of that protection and thus they usually disregard the basic rule according to which the Charter is to be applied to a Member State only when it is implementing Union law. The primary aim of the project therefore is a proper definition of binding nature and applicability of the Charter in legal environment of the Slovak republic with exact regard to performance of judicial power.

Public Service Development Establishing Good Governance" , National University for Public Administration in Budapest with the support of the European Commission KÖFOP-2.1.2-VEKOP-15-2016-00001 (2017 - 2018), member of the working group "Elections and democracy"

The aim during the research period was to provide the theoretical and practical basis for the information security training (bachelor, master and doctoral courses and postgraduate trainings for professionals) required for the public service based on our scientific research.