M.  Moré, Amorim, F. W., Benitez-Vieyra, S., Medina, A. M., Sazima, M., and Cocucci, A. A., ?Armament imbalances: match and mismatch in plant-pollinator traits of highly specialized long-spurred orchids?, PLoS ONE, vol. 7, p. e41878, 2012.