IBRAEVA, G. T.; TLEUBERGENOV, M. I. Main Inverse Problem for Differential Systems With Degenerate Diffusion. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 5, p. 712–716, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2454. Acesso em: 5 dec. 2025.