IVANCHOV, N. I. Inverse problems for the heat-conduction equation with nonlocal boundary conditions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 45, n. 8, p. 1066–1071, 1993. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5901. Acesso em: 5 dec. 2025.