HURBÁNKOVÁ, Ľubica. Analysis of Research and Development Expenditure in European Union Countries. In ITEMA 2020: Recent Advances in Information Technology, Tourism, Economics, Management and Agriculture. International Scientific Conference. ITEMA 2020: Fourth International Scientific Conference on Recent Advances in Information Technology, Tourism, Economics, Management and Agriculture : Conference Proceedings. - Belgrade : Association of Economists and Managers of the Balkans, 2020. ISBN 978-86-80194-36-3. ISSN 2683-5991, pp. 137-142 online. KEGA 007EU-4/2020.