György, O.: Cluster grouping of EU member states according to some economic performance and circular economic indicators.
Vadyba. 1 (40), 17-25, 2024.

György, O., Tóth, J.: Az EU-tagállamok klaszterei a fenntartható termelési és fogyasztási indikátorok alapján = Clusters of EU countries based on sustainable production and consumption indicators.
Stat Szle. 101 (2), 172-196, 2023.

György, O.: Labour market implications of the transition to a circular economy.
In: Challenges in the Carpathian basin : 16th Annual International Conference on Economics and Business : conference volume. Ed.: Nagy Benedek, RISOPRINT, Kolozsvár, 36-44, 2023. ISBN: 9789735330385

György, O., Orbán, E.: Changes of Urban Food Purchase Habits during the First Wave of COVID-19: Hungarians Living in Romania and Hungary Compared.
Acta Univ. Sapientiae, Eur. Reg. Stud. 21 (1), 44-61, 2022.