A. Klumpp, I. F. Modesto, M. Domingos, and G. Klumpp, “Susceptibility of various Gladiolus cultivars to fluoride pollution and their suitability for bioindication”, PAB, vol. 32, no. 3, pp. 239–247, Mar. 1997, doi: 10.1590/S1678-3921.pab1997.v32.4632.