IVANCHOV, N. I. Inverse problem of simultaneous determination of two coefficients in a parabolic equation. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 52, n. 3, p. 329–335, 2000. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4422. Acesso em: 27 apr. 2025.