[1]
F. C. da Silva, A. E. Boaretto, R. S. Berton, H. B. Zotelli, C. A. Pexe, and E. Mendonça, “Sugarcane grown in fertilized soil with sewage sludge: nutrients, heavy metals and productivity”, PAB, vol. 33, no. 1, pp. 1–8, Jan. 1998.