Marrs, R.H. (1987): Soil fertility and nature conservation: research note. In: Bell, M.; Bunce, R.G.H. (eds.): Agriculture and conservation in the hills and uplands. Grange-over-Sands, NERC/ITE: 138. (ITE Symposium, 23).
Marshall, E.J.P., West, T.M., Kleijn, D. (2006): Impacts of an agri-environment field margin prescription on the flora and fauna of arable farmland in different landscapes. Agriculture, Ecosystems and Environment, 113: 36–44.
Marshall, V.G. (2000): Impacts of forest harvesting on biological processes in northern forest soils. Forest Ecology and Managment, 133: 43-60.