1. ADAS 2006 Economic valuation of soil functions Phase 1: Literature review and method development
2. Anthony , S. Duethman , D. Gooday , R. Harris , D. Newell-Price , P. Chadwick , D. Misselbrook , T. 2009 Quantitative Assessment of Scenarios for Managing Trade-Off between the Economic Performance of Agriculture and the Environment and Between Different Environmental Media
3. Soil biota, ecosystem services and land productivity;Barrios;Ecological Economics,2007