Cf. Árvores de São Paulo — O pau-brasil está frutificando na cidade, Ricardo Cardim 15 December 2009 blog entry; "Coisa rara no clima paulistano, as inúmeras árvores de pau-brasil (Caesalipinia echinata) plantadas pela cidade estão frutificando abundantemente." (in exceptional circumstances, however, brazilwood may flower in São Paulo) (in Portuguese)
Lichtenberg, Silke; Huber-Sannwald, Elisabeth; Nehren, Udo; Reyes-Agüero, Juan Antonio (2019). "Use and Conservation of the Threatened Brazilian National Tree Paubrasilia echinata Lam.: A Potential for Rio de Janeiro State?". Strategies and Tools for a Sustainable Rural Rio de Janeiro. Springer Series on Environmental Management. pp. 205–219. doi:10.1007/978-3-319-89644-1_14. ISBN978-3-319-89643-4. ISSN0172-6161. S2CID134437366.
Dapson, RW; Bain, CL (2015). "Brazilwood, sappanwood, brazilin and the red dye brazilein: from textile dyeing and folk medicine to biological staining and musical instruments". Biotech Histochem. 90 (6): 401–23. doi:10.3109/10520295.2015.1021381. PMID25893688.
Dodge, Cameron J. G. (2018). "A Forgotten Century of Brazilwood: The Brazilwood Trade from the Mid-Sixteenth to Mid-Seventeenth Century". e-Journal of Portuguese History. 16 (1): 1–27. doi:10.7301/Z0VH5MBT.
"Paubrasilia echinata". Flora do Brasil 2020 - Algae, Fungi and Plants. Institute of Research Rio de Janeiro Botanical Garden. Retrieved 20 February 2019.
Dapson, RW; Bain, CL (2015). "Brazilwood, sappanwood, brazilin and the red dye brazilein: from textile dyeing and folk medicine to biological staining and musical instruments". Biotech Histochem. 90 (6): 401–23. doi:10.3109/10520295.2015.1021381. PMID25893688.
Lichtenberg, Silke; Huber-Sannwald, Elisabeth; Nehren, Udo; Reyes-Agüero, Juan Antonio (2019). "Use and Conservation of the Threatened Brazilian National Tree Paubrasilia echinata Lam.: A Potential for Rio de Janeiro State?". Strategies and Tools for a Sustainable Rural Rio de Janeiro. Springer Series on Environmental Management. pp. 205–219. doi:10.1007/978-3-319-89644-1_14. ISBN978-3-319-89643-4. ISSN0172-6161. S2CID134437366.
Lichtenberg, Silke; Huber-Sannwald, Elisabeth; Nehren, Udo; Reyes-Agüero, Juan Antonio (2019). "Use and Conservation of the Threatened Brazilian National Tree Paubrasilia echinata Lam.: A Potential for Rio de Janeiro State?". Strategies and Tools for a Sustainable Rural Rio de Janeiro. Springer Series on Environmental Management. pp. 205–219. doi:10.1007/978-3-319-89644-1_14. ISBN978-3-319-89643-4. ISSN0172-6161. S2CID134437366.