DEACONU, Valentin; KUMJIAN, Alex; RAMAZAN, Birant. Fell bundles associated to groupoid morphisms. Mathematica Scandinavica, Berkeley, CA, United States, v. 102, n. 2, p. 305–319, 2008. DOI: 10.7146/math.scand.a-15064. Disponível em: https://journals.msp.org/mscand/article/view/633. Acesso em: 24 jul. 2026.