@article{Fischer_van den Berg_Mutengwa_2015, title={Is Bt maize effective in improving South African smallholder agriculture?}, volume={111}, url={https://sajs.co.za/article/view/3507}, DOI={10.17159/sajs.2015/a0092}, number={1/2}, journal={South African Journal of Science}, author={Fischer, Klara and van den Berg, Johnnie and Mutengwa, Charles}, year={2015}, month={Jan.}, pages={1–2} }