Ward, Andrew
Hilitski, Feodor
Schwenger, Walter
Welch, David
Lau, A. W. C.
Vitelli, Vincenzo
Mahadevan, L.
Dogic, Zvonimir
Article History
Received: 28 February 2013
Accepted: 20 January 2015
First Online: 2 March 2015
Competing interests
: The authors declare no competing financial interests.