KRAGH, Thomas. Orientations on 2-vector Bundles and Determinant Gerbes. Mathematica Scandinavica, Berkeley, CA, United States, v. 113, n. 1, p. 63–82, 2013. DOI: 10.7146/math.scand.a-15482. Disponível em: https://journals.msp.org/mscand/article/view/446. Acesso em: 24 jul. 2026.