Cramer, V. A., Hobbs, R. J., and Standish, R. J. (2008) What's new about old fields? Land abandonment and ecosystem assembly. Trends in Ecology and Evolution, 23(2), 104-112.
Cramer, V. A. and Hobbs, R. J. (2007) Old fields: dynamics and restoration of abandoned farmland. Island Press, Washington, 334pp.