Freitas, Maurício Assuero Lima de, and Alexandre Stamford da Silva. “Finite Difference Equation Model Applied to the Supplementary Health System”. Trabalho, Educação e Saúde 13, no. 3 (August 26, 2022). Accessed May 18, 2024. https://www.tes.epsjv.fiocruz.br/index.php/tes/article/view/1371.