Moraes, M. G. de, A. A. Q. de Oliveira, and M. G. Santos. “Sugars in Ferns and Lycophytes Growing on Rocky Outcrops from Southeastern Brazilian Coast”. Bioscience Journal, vol. 30, no. 6, Nov. 2014, pp. 1882-4, https://seer.ufu.br/index.php/biosciencejournal/article/view/23019.