BARANNYK, T. A. Conditional Symmetry of a System of Nonlinear Reaction-Diffusion Equations. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 67, n. 11, p. 1443–1449, 2015. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2080. Acesso em: 5 dec. 2025.