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J. Lehmann, B. Glaser, N. Kaampf, W.I. Woods, W. Sombroek, D.C. Kern, T.J.F. Cunha et al., [[3]Amazonian Dark Earths: origin, properties, and management], J. Lehmann, D. Kern, B. Glaser & W. Woods, 2003, p. 227–241.
Bruno Glaser, Ludwig Haumaier, Georg Guggenberger & Wolfgang Zech, Stability of soil organic matter in Terra Preta soils, su geo.uni-bayreuth.de. URL consultato il 19 febbraio 2014 (archiviato dall'url originale il 27 settembre 2007).