MANCINI, Solange; RUAS, Maria A. S. Bifurcations of generic one parameter families of functions on foliated manifolds. Mathematica Scandinavica, Berkeley, CA, United States, v. 72, p. 5–19, 1993. DOI: 10.7146/math.scand.a-12432. Disponível em: https://journals.msp.org/mscand/article/view/1193. Acesso em: 24 jul. 2026.