@ARTICLE {BRAKO:2020, title = {Do voluntary certification standards improve yields and wellbeing? Evidence from oil palm and cocoa smallholders in Ghana}, author = {Brako, D. E. and Asare, R. and Alexandros, G. }, journal = {International Journal of Agricultural Sustainability}, year = {2020}, volume = {19}, number = {1}, pages = {16--39}, issn = {1473-5903}, note = {WAHub; Science Area NRM; CRP CCAFS; Cocoa; Published online 22 Aug 2020}, url = {https://doi.org/10.1080/14735903.2020.1807893}, doi = {10.1080/14735903.2020.1807893}, }