Reference
Marzeyeh Hatami, Ali Reza Monfared, Mostafa Haghani, Reza Amiri Fahliani (2013): Effect of Bombus terrestris L. (Hymenoptera, Apidae) pollinating
on flowering and fruiting trends of greenhouse tomato
(Lycopersicon esculentum) – Linzer biologische Beiträge – 0045_2: 1907 - 1919.