Sobota, Vladimír http://orcid.org/0000-0003-2285-5619
Müller, Martin
Roubík, Karel http://orcid.org/0000-0001-5813-6355
Article History
Received: 23 October 2018
Accepted: 26 March 2019
First Online: 8 April 2019
Competing Interests
: The authors declare no competing interests.