Collevatti, R. G., M. E. C. Amara, and F. S. Lopes. “Role of Pollinators in seed·set and a Test of Polleo Limitation Hypothesis in the Tropical Weed <i>Triumfetta semitriloba</i≫ (Tiliaceae)”. Revista De Biología Tropical, vol. 45, no. 4, Dec. 1997, pp. 1401–1407, https://revistas.ucr.ac.cr/index.php/rbt/article/view/21445.