Cauchy Matrices in the Observation of Diffusion Equations. Journal of Mathematical Study, [S. l.], v. 48, n. 4, p. 330–344, 2021. DOI: 10.4208/jms.v48n4.15.02. Disponível em: https://www.global-sci.com/index.php/jms/article/view/13252. Acesso em: 6 dec. 2025.