Cárdenas-Calle, Santiago, Juan D Cardenas, Boris O Landázuri, Gabriela Mogrovejo, Antonio M Crespo, Nils Breitbach, Matthias Schleuning, and Boris A Tinoco. “Pollinator Effectiveness in the Mixed-Pollination System of a Neotropical Proteaceae, Oreocallis Grandiflora”. Journal of Pollination Ecology 26 (January 13, 2021). Accessed May 3, 2024. https://www.pollinationecology.org/index.php/jpe/article/view/601.