African endemic stingless bees as an efficient alternative pollinator to honey bees in greenhouse cucumber (Cucumis sativus L)

1. Kiatoko, N.
2. Pozo, M.I.
3. Van Oystaeyen, A.
4. Musonye, M.
5. Kika, J.
6. Wäckers, F.
7. van Langevelde, F.
8. Hundt, B.
9. Jaramillo, J.