Štenpien, E. A közigazgatási bíráskodás története Csehszlovákiában 1918 - 1939 között. Budapest: Dialóg Campus Kiadó, 2019. online. - ISBN 9786156020154.

URL:https://nkerepo.uni-nke.hu/xmlui/bitstream/handle/123456789/12695/A_kozigazgatasi_biraskodas_csehszlovakiaban.pdf;jsessionid=9D4BA618D1E68B45FC2FB9664A6F96A8?sequence=1. Č. projektu: KÖFOP-2.1.2-VEKOP-15-2016-00001: "A jó kormányzást megalapozó közszolgálat-fejlesztés”

Štenpien, E. A közigazgatási bíráskodás a mai Szlovák Köztársaság területén. Budapest: Nemzeti Közszolgálati Egyetem, Közigazgatási Továbbképzési Intézet, 2020. online - ISBN 9789634982432. - URL: https://nkerepo.uni-nke.hu/xmlui/bitstream/handle/123456789/16090/A%20kozigazgatasi%20biraskodas%20a%20mai%20Szlovak%20Koztarsasag%20teruleten.pdf;jsessionid=3C6C0B5D52BE0EEE14F174116B93B28F?sequence=1. Č. projektu: KÖFOP-2.1.2-VEKOP-15-2016-00001: "A jó kormányzást megalapozó közszolgálat-fejlesztés”

Štenpien, E., Orosz, L. A Szlovák Köztársaság választójoga - az inspiráció lehetséges forrása. In: Tanulmányok a választójog, a választási rendszerek és a népszavazás aktuális kérdéseiről : A Választás és Demokrácia Ludovika Kutatócsoport kutatási eredményei (2017–2018). Budapest : Dialóg Campus Kiadó, 2019. - ISBN 9786156020963. 155-228 p.

https://nkerepo.uni-nke.hu/xmlui/bitstream/handle/123456789/13007/web_PDF_Tanulmanyok_a_valasztojog.pdf;jsessionid=B92D56F8195BC45FB3B3A482FF53BDA9?sequence=2.

Štenpien, E. Právna úprava pôžičky na Slovensku do roku 1918 / Erik Štenpien. - Projekt: Pôžička či úžera? Nútený výkon rozhodnutia - historickoprávne základy a problémy aplikačnej praxe. In: Historia et theoria iuris: printový a e-časopis pre mladých vedeckých pracovníkov právnických fakulte na Slovensku: teoretický časopis pre otázky štátu a práva. - ISSN 1338-0133. - supl. Roch. 11, (2019), s. 49-65.

Štenpien, E. Pôžička a bankrot v uhorskom práve. In: Pôžička či úžera? Nútený výkon rozhodnutia - historickoprávne základy. - Košice : Univerzita Pavla Jozefa Šafárika v Košiciach, 2019. - ISBN: 978-80-8152-791-3. - 72. - 120. pp.

APVV-19-0419 -100 Years of Treaty of Trianon., 01/07/2020-30/06/2024, principal investigator

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 1/0198/17 The loan or usury? Compulsory enforcement of judgment - roman and law foundations and problems of application practice, 01/2017-12/2019, principal investigator

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

VEGA 1/0131/13 Historical development of contract of purchase and tendencies of its current recodification in Slovak Republic, 01/ 2013 - 12/2015, principal investigator

The project deals with historical specifications of development of the institute of purchase contract. It emphasizes three main stages of development:

1. the regulation of emptio-venditio in Roman private law with the accent on its understanding in old-Roman and pre-classical stage of the development of Roman law as a real contract with gradual transformation on a consensual contract
2. medieval law with the accent on legislation under Ugrian feudal law which was contained in the legal habits (Tripartitum) and the acts
3. the period of 20th century, when to 1950, was no codification of the purchase contract and then were adopted with a relatively small time interval the two Civil Code. In this period, the project focuses on the current codification efforts of the purchase contract in the Slovak legal system under which will be fully adopted the new legislation.

VEGA 1/0965/13 Electoral legislation in Slovak Republic – development, current state, perspectives, 01/2013-12/2015, co-worker

The scientific project is focused on complex analysis of the present development, evaluation of the actual situation, formulization of the perspectives of the electoral legislation of the Slovak Republic with ambition to use knowledge gained in the process of its solving in actual legislative practice, mostly in connection with proclaimed intention to recodify valid electoral legislation, or with intended intention to prepare legislative project - so called election codex. Basically, the main goal of authors is to create scientifically based model of optimal regulation of electoral legislation of the Slovak Republic and within the frame of it to define also themes for possible or desired changes of particular institutes of valid election law. The project includes also analysis and evaluation of the present model of electoral justice in the Slovak Republic and its comparasion with models used abroad with purpose to ouline also its possible options.