| Germination characteristics of dimorphic honeybush (Cyclopia spp.) seed J Koen, MM Slabbert, C Bester, F Bierman South African Journal of Botany 110, 68-74, 2017 | 18 | 2017 |
| Honeybush (Cyclopia spp.) pollen viability and surface morphology J Koen, MM Slabbert, M Booyse, C Bester South African Journal of Botany 128, 167-173, 2020 | 9 | 2020 |
| Honeybush (Cyclopia spp.) anther-stigma distance and intraspecies cross compatibilities J Koen, MM Slabbert, M Booyse, C Bester South African Journal of Plant and Soil 38 (1), 13-18, 2021 | 4 | 2021 |
| Heuningbos (Cyclopia spp.) volwasse embrioweefselkultuur en die effek van peulposisie op saadkleur J Koen, MM Slabbert, M Booyse, C Bester Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie/South African …, 2021 | | 2021 |
| Honeybush (Cyclopia spp.) mature embryo culture and the influence of pod position on seed colour J Koen, MM Slabbert, M Booyse, C Bester Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 40 (1), 50-58, 2021 | | 2021 |
