Stein, Katharina, and Isabell Hensen. 2011. “Potential Pollinators and Robbers: A Study of the Floral Visitors of Heliconia Angusta (Heliconiaceae) and Their Behaviour”. Journal of Pollination Ecology 4 (May):39-47. https://doi.org/10.26786/1920-7603(2011)7.