Simek, Jiri
Kovalikova, Zuzana
Dohnal, Vlastimil
Tuma, Jiri
Funding for this research was provided by:
Specific Research Project of Faculty of Science, University of Hradec Kralove (2116/2014)
Esperantic Studies Foundation (CZ.1.07./2.3.00/30.0052)
Article History
Received: 27 November 2017
Accepted: 23 July 2018
First Online: 1 August 2018