BRUGGESSER, H.; MANI, P. Shellable Decompositions of Cells and Spheres. Mathematica Scandinavica, Berkeley, CA, United States, v. 29, p. 197–205, 1971. DOI: 10.7146/math.scand.a-11045. Disponível em: https://journals.msp.org/mscand/article/view/2310. Acesso em: 25 jul. 2026.