Nunes-Silva, P., M. Hrncir, L. Shipp, P. Kevan, and V. L. Imperatriz-Fonseca. “The Behaviour of Bombus Impatiens (Apidae, Bombini) on Tomato (Lycopersicon Esculentum Mill., Solanaceae) Flowers: Pollination and Reward Perception”. Journal of Pollination Ecology, vol. 11, Oct. 2013, pp. 33-40, doi:10.26786/1920-7603(2013)3.