BALLICO, E. Stable vector bundles on curves: numerical invariants of their extremal subbundles. Mathematica Scandinavica, Berkeley, CA, United States, v. 89, n. 1, p. 46–56, 2001. DOI: 10.7146/math.scand.a-14330. Disponível em: https://journals.msp.org/mscand/article/view/875. Acesso em: 24 jul. 2026.