Adam P. Karremans, Franco Pupulin, David Grimaldi, Kevin K. Beentjes, Roland Butôt, Gregorio E. Fazzi, Karsten Kaspers, Jaco Kruizinga, Peter Roessingh, Erik F. Smets, Barbara Gravendeel
Ann Bot. 2015 Sep; 116(3): 437–455. Published online 2015 Jun 13. doi: 10.1093/aob/mcv086