IVANCHOV, N. I. Inverse Problem with Free Boundary for Heat Equation. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 55, n. 7, p. 901–910, 2003. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3965. Acesso em: 6 dec. 2025.