Soil-plant-animal interactions in the establishment phase of a silvopastoral system in NE Scotland A.R. Sibbald, A.M. Hislop, J. Dick, D.A. Elston, G.R. Jason, L.C. Nwaigbo and G. Hudson Ann. Zootech., 47 5-6 (1998) 512 DOI: 10.1051/animres:19980533