“What Field School Teachers Say about the Teaching of Mathematics: A Study in the Northeast of Brasil”. Revista Latinoamericana De Etnomatemática Perspectivas Socioculturales De La Educación Matemática, vol. 7, no. 1, Feb. 2014, pp. 4-18, https://revista.etnomatematica.org/index.php/RevLatEm/article/view/103.