Field-scale modeling of tree–crop interactions: Challenges and development needs. - Luedeling, Eike; Smethurst, Philip J.; Baudron, Frédéric; Bayala, Jules; Huth, Neil I.; van Noordwijk, Meine; Ong, Chin K.; Mulia, Rachmat; Lusiana, Betha; Muthuri, Catherine; Sinclair, Fergus L. (Agricultural Systems, 2016)