PETERSEN, Dan. A remark on singular cohomology and sheaf cohomology. Mathematica Scandinavica, Berkeley, CA, United States, v. 128, n. 2, 2022. DOI: 10.7146/math.scand.a-132191. Disponível em: https://journals.msp.org/mscand/article/view/114. Acesso em: 24 jul. 2026.