Fletcher, Patrick
Bertram, Richard
Tabak, Joel
Funding for this research was provided by:
National Science Foundation (DMS1220063)
Article History
Received: 30 October 2015
Revised: 2 March 2016
Accepted: 7 March 2016
First Online: 1 April 2016
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.