Magalhães, Washington Luiz Esteves, et al. “Determination of Wood Chemical and Anatomical Properties by Difuse Reflectance of Near Infrared”. Pesquisa Florestal Brasileira, no. 50, Mar. 2011, p. 25, https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/238.