Funding for this research was provided by:
Hungarian Scientific Research Fund (PD104937, 116618)
Magyar Tudományos Akadémia (Bolyai PD)
University of Pécs Excellence Centre program (20765-3/2018/FEKUTSTRAT)
Article History
Received: 29 May 2019
Accepted: 24 October 2019
First Online: 12 December 2019