MARTIN, P.; MAZORCHUK, V. Partitioned Binary Relations. MATHEMATICA SCANDINAVICA, [S. l.], v. 113, n. 1, p. 30–52, 2013. DOI: 10.7146/math.scand.a-15480. Disponível em: https://www.mscand.dk/article/view/15480. Acesso em: 3 apr. 2025.