Idsert Jelsma has published a review of the Ophir project:
Lotte Woittiez has published a review of the causes of yield gaps in oil palm:
Yield gaps in oil palm: A quantitative review of contributing factors.
Download a copy here: Woittiez2017.
Tiemen Rhebergen has published an article on
Climate, soil and land-use based land suitability evaluation for oilpalm production in Ghana.
Download a copy here: Rhebergen2016.