Funding for this research was provided by:
Hungarian National Research, Development and Innovation Office (GINOP-2.3.2-15-2016-00058)
New National Excellence Program of the Hungarian Ministry of Human Capacities. (UNKP-18-4)
Bolyai János Research Foundation of the Hungarian Academy of Science (fellowship)
Article History
Received: 29 May 2018
Revised: 30 October 2018
Accepted: 2 November 2018
First Online: 21 November 2018