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Nunes-Silva, P., Hrncir, M., Shipp, L., Kevan, P. and Imperatriz-Fonseca, V.L. 2013. The behaviour of Bombus impatiens (Apidae, Bombini) on tomato (Lycopersicon esculentum Mill., Solanaceae) flowers: pollination and reward perception. Journal of Pollination Ecology. 11, (Oct. 2013), 33–40. DOI:https://doi.org/10.26786/1920-7603(2013)3.