KALMBACH, H. . E. G. Manifolds and Catastrophes for Physical Systems. Asian Journal of Computer Science Engineering(AJCSE), [S. l.], v. 6, n. 1, 2021. DOI: 10.22377/ajcse.v6i1.145. Disponível em: http://ajcse.info/index.php/ajcse/article/view/145. Acesso em: 6 may. 2024.