BENDERSKY, Martin. Characteristic Classes of $n$-Manifolds Immersing in $\mathsf{R}^{n+k}$. Mathematica Scandinavica, Berkeley, CA, United States, v. 31, p. 293–300, 1972. DOI: 10.7146/math.scand.a-11436. Disponível em: https://journals.msp.org/mscand/article/view/2205. Acesso em: 25 jul. 2026.