MARTIN, Paul; MAZORCHUK, Volodymyr. Partitioned Binary Relations. Mathematica Scandinavica, Berkeley, CA, United States, v. 113, n. 1, p. 30–52, 2013. DOI: 10.7146/math.scand.a-15480. Disponível em: https://journals.msp.org/mscand/article/view/448. Acesso em: 24 jul. 2026.