Vrana, V.: Roman diplomacy in ancient Rome. In: Glossa Iuridica. - ISSN 2064-6887. - Roč. 8, č. 3 Trianon (2021), pp. 123-140.

Vrana, V.: Roman legal dimension of loan or usury and enforceable execution of judgement,. In: Loan or usury? Enforceable execution of judgement - law-historical basements, Košice : Univerzita Pavla Jozefa Šafárika v Košiciach, 2019. - ISBN 9788081527913. - pp.. 8-71.

Vrana, V.: Dichotomy of Roman law and attitude of selected post-classical Roman jurists, In: Historia et theoria iuris : print e-magazin for young scientific workers of law´s faculties in Slovakia, theoretic magazin for questions of state and law, ISSN 1338-0133. - Roč. 11, (2019), pp. 13-23.

Vrana, V. -Dobrovič, Ľ.: Antic paradigms and Trianon treaty, Košice, 2024, 122 s. [6,45 AH], online - DIGARCHUPJS., ISBN (electronic 9788057403173, project APVV : 100 years of Trianon treaty, APVV-19-0419. 10.33542/APT-0317-3 DOI;DOI [DOBROVIČ, Ľuboš ( Author, 49.15% [3,17 AS] ) - VRANA, Vladimír ( Author, 50.85% [3,28 AS]

Vrana, V.: Iuris praecepta sunt haec: honeste vivere, alterum non laedere, suum cuique tribuere, in: "Rituals and symbols in Roman law", Právněhistorické studie – special edition from XXV. Conference Czech and Slovak law´romanists, Praha 2025 (in print)

VEGA 1/0198/17 The loan or usury? Compulsory enforcement of judgment - historical and law foundations and problems of application practice, 01/2017-12/2019, co-worker

The project aims on law and historical specifications of genealogy of compulsory enforcement of judgment and actual development tendencies in following purviews:

• legal regulations of real contract of “classical” loan and its differentiation basis for issue of later execution title, condemnation decision and its procedural “pendant” – in case of debtor’s non-performance of obligation or decision of condemned - compulsory enforcement of judgment through applying distraint actions of the creditor during the classical and Justinian roman law relying on the exegesis of the original sources of roman law
• legal history with emphasis on legislation of the Hungarian law in the legal customs and laws, while accentuates the process of creation of dual system of private law in the 19th century and development of the legal system in ČSR until 1950
• present state based on the current legislation of contracts that are substantive precondition of execution, as well as procedural provisions and their development trends

APVV-19-0419 100 years of Trianon treaty, 07/2020-06/2024, co-worker

Treaty of Trianon is one of the most problematic treaties of the Versailles peace system, rising different emotions on the both sides of the Danube during 100 years of being in force. Pride of one sown state that the treaty has helped to build on the one side, dissappointment and disillusion on the other. Rising international cooperation of Slovak, Hungarian and Polish legal scientists will aspire to change the stated status by revising the Treaty of Trianon excactly after 100 years of its signing in respect of it´s significance to the region of Central Europe as their primary goal. Treaty of Trianon hasn’t been analyzed in detail and comprehensively examined by legal scientists yet, there for legal historians, romanists as well as positive lawyers will take part in there a search in order to examine the Treaty mostly in aspects of public law, not neglecting private law consequences as well. While the primary objective of there as earch remains scientific, the ambition of the participants also excedesin to achieving consensus in a mater deeply controversional over 100 years mostly between Slovak and Hungarian colleagues. The results of there search will not only beutilised in the pedagogical proces s, but also in the praxis of Historian society in Košice. 

Vega project n..1/0610/25 Historical and legal background, development and parallels of restorative justice and their legacy for modern criminal law

Restorative justice is a process that aims to reduce injustice. It aims to strengthen justice and reduce crime. In order to achieve this, it seeks to bring together all the parties involved - that is, the victim who has been harmed, the offender who has caused the harm in question, and the community in which the harm has been caused. Restorative justice in its modern understanding and meaning, however, did not appear on the scene until the end of the last century. However, the various ideological concepts, principles, elements or starting points of restorative justice have been present in our past since the earliest times and can be seen in the development of (criminal)law and its institutes. The main aim of the presented project is a systematic analysis of the historical-legal foundations and individual elements of restorative justice in the past - with a subsequent identification of their (possible) legacy in the criminal policy of the state and modern criminal law.