Nunes-Silva, Patrícia, Michael Hrncir, Les Shipp, Peter Kevan, and Vera Lucia Imperatriz-Fonseca. 2013. “The Behaviour of Bombus Impatiens (Apidae, Bombini) on Tomato (Lycopersicon Esculentum Mill., Solanaceae) Flowers: Pollination and Reward Perception”. Journal of Pollination Ecology 11 (October):33-40. https://doi.org/10.26786/1920-7603(2013)3.