scholarly article by Sarah Faulwetter et al published 6 July 2016 in Research Ideas and Outcomes
author: Lyubomir Penev, Teodor Georgiev, Viktor Senderov, Dmitry Sergeevich Schigel, Donat Agosti, Stefanie Dekeyzer, Nicolas Bailly, Guido Sautter, Christos Arvanitidis