Kratz, D., I. Wendling, C. A. Stuepp, and R. de Oliveira Fragoso. “Ranking of Substrates Based on Piptadenia Gonoacantha Morphological Parameters”. Bosque, vol. 37, no. 2, May 2017, pp. 265-71, doi:10.4067/S0717-92002016000200005.