YAMANOUCHI, Takehiko. Bicrossproduct Kac Algebras, Bicrossproduct Groups and von Neumann Algebras of Takesaki’s Type. Mathematica Scandinavica, Berkeley, CA, United States, v. 71, p. 252–260, 1992. DOI: 10.7146/math.scand.a-12426. Disponível em: https://journals.msp.org/mscand/article/view/1224. Acesso em: 25 jul. 2026.