Robles Zambrano, Génesis Karolina, et al. “A Trialist Perspective of the Labor Inclusion of Indigenous People in Ecuador through PESTEL and Neutrosophic Cognitive Maps”. Neutrosophic Sets and Systems, vol. 37, Oct. 2020, pp. 31-38, https://fs.unm.edu/nss8/index.php/111/article/view/839.