Stutter, Marc I., Shand, Charles A., George, Timothy S., Blackwell, Martin S. A., Bol, Roland, MacKay, Regina L., Richardson, Alan E., Condron, Leo M., Turner, Benjamin L., and Haygarth, Philip M. 2012. "Recovering Phosphorus from Soil: A Root Solution?." Environmental science & technology. 46 (4):1977–1978. https://doi.org/10.1021/es2044745