Cruz, Temile Santana, et al. “Evaluation of the Influence of Sowing Depth and of Substrates in the Production of Seedlings of Mutamba (Guazuma Ulmifolia Lam. Malvaceae)”. MAGISTRA, vol. 28, nº 2, maio de 2017, p. 178-84, https://www3.ufrb.edu.br/index.php/magistra/article/view/3824.