PROTSAKH, N. P. Inverse Problem for a Semilinear Ultraparabolic Equation with Unknown Right-Hand Side. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 3, p. 333–348, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2136. Acesso em: 5 dec. 2025.