Funding for this research was provided by:
National Science Foundation (DMS-1361501)
Marsden Fund Council of the Royal Society of New Zealand
Slovenian Research Agency (P1-0222)
Ford Motor Co.
National Science Foundation (DMS 1201498)
Slovenia Research Agency (L1-6722)
Article History
Received: 27 August 2016
Revised: 31 October 2017
First Online: 4 January 2018