D. da S. de Jesus, F. M. Martins, and A. D. de Azevedo Neto, “Structural changes in leaves and roots are anatomical markers of aluminum sensitivity in sunflower”, Pesq. Agropec. Trop., vol. 46, no. 4, pp. 383–390, Nov. 2016, doi: 10.5216/pat.v46i4.41426.