HREINSDÓTTIR, Freyja. The Koszul dual of the ring of three commuting matrices. Mathematica Scandinavica, Berkeley, CA, United States, v. 87, n. 2, p. 161–199, 2000. DOI: 10.7146/math.scand.a-14304. Disponível em: https://journals.msp.org/mscand/article/view/901. Acesso em: 24 jul. 2026.