Speciation slowing down in widespread and long-living tree taxa: insights from the tropical timber tree genus Milicia (Moraceae) - Dainou, K.; Mahy, G.; Duminil, J.; Dick, C.W.; Doucet, J.L.; Donkpegan, A.S.L.; Pluijgers, M.; Sinsin, B.; Lejeune, P.; Hardy, Olivier J. (Springer, 2014)