Beattie, A. J.; Turnbull, C.; Knox, R. B.; Williams, E. G. 1984. Ant inhibition of pollen function: a possible reason why ant pollination is rare. American Journal of Botany 71:421-426.

Beattie, A. J.; Turnbull, C.; Hough, T.; Jobson, S.; Knox, R. B. 1985. The vulnerability of pollen and fungal spores to ant secretions: evidence and some evolutionary implications. American Journal of Botany 72:606-614.