CHOI, Yemon; SAMEI, Ebrahim; STOKKE, Ross. Extension of Derivations, and Connes- Amenability of the Enveloping Dual Banach Algebra. Mathematica Scandinavica, Berkeley, CA, United States, v. 117, n. 2, p. 258–303, 2015. DOI: 10.7146/math.scand.a-22870. Disponível em: https://journals.msp.org/mscand/article/view/374. Acesso em: 24 jul. 2026.